Input File

Description

dft-pruning

Tests all grid pruning options available and screening of small weights. Check against grid size.

dfccsd-grad1

DF-CCSD cc-pVDZ gradients for the H2O molecule.

dfomp2-grad2

OMP2 cc-pVDZ energy for the NO molecule.

mp3-grad1

MP3 cc-pVDZ gradient for the H2O molecule.

cbs-xtpl-energy

Extrapolated water energies - density-fitted version

fnocc3

Test FNO-QCISD(T) computation

mp2-property

MP2 cc-pvDZ properties for Nitrogen oxide

options1

check all variety of options parsing

cc36

CC2(RHF)/cc-pVDZ energy of H2O.

fsaptd-terms

F-SAPT0/jun-cc-pvdz procedure for methane dimer

omp2-1

OMP2 cc-pVDZ energy for the H2O molecule.

nbody-vmfc-gradient

Computation of VMFC-corrected water trimer gradient (geometry from J. Chem. Theory Comput. 11, 2126-2136 (2015))

cc8c

ROHF-CCSD cc-pVDZ frozen-core energy for the \(^2\Sigma^+\) state of the CN radical, with Cartesian input.

aediis-1

ADIIS test case, from 10.1063/1.3304922

nbody-cp-gradient

Computation of CP-corrected water trimer gradient (geometry from J. Chem. Theory Comput. 11, 2126-2136 (2015))

cc21

ROHF-EOM-CCSD/DZ analytic gradient lowest \(^{2}A_1\) excited state of H2O+ (B1 excitation)

mp2-1

All-electron MP2 6-31G** geometry optimization of water

tu3-h2o-opt

Optimize H2O HF/cc-pVDZ

dfep2-1

Compute three IP and 2 EA’s for the PH3 molecule

omp2-5

SOS-OMP2 cc-pVDZ geometry optimization for the H2O molecule.

omp2-3

OMP2 cc-pVDZ energy for the NO radical

cc29

CCSD/cc-pVDZ optical rotation calculation (both gauges) on Cartesian H2O2

zaptn-nh2

ZAPT(n)/6-31G NH2 Energy Point, with n=2-25

sapt4

SAPT2+(3) aug-cc-pVDZ computation of the formamide dimer interaction energy, using the aug-cc-pVDZ-JKFIT DF basis for SCF and aug-cc-pVDZ-RI for SAPT. This example uses frozen core as well as MP2 natural orbital approximations.

cc39

RHF-CC2-LR/cc-pVDZ dynamic polarizabilities of HOF molecule.

mcscf3

RHF 6-31G** energy of water, using the MCSCF module and Z-matrix input.

dlpnomp2-1

comparison of DF-MP2 and DLPNO-MP2

psimrcc-ccsd_t-1

Mk-MRCCSD(T) single point. \(^1A_1\) CH2 state described using the Ms = 0 component of the singlet. Uses RHF singlet orbitals.

scf4

RHF cc-pVDZ energy for water, automatically scanning the symmetric stretch and bending coordinates using Python’s built-in loop mechanisms. The geometry is specified using a Z-matrix with variables that are updated during the potential energy surface scan, and then the same procedure is performed using polar coordinates, converted to Cartesian coordinates.

nbody-he-4b

MP2/aug-cc-pvDZ many body energies of an arbitrary Helium complex, addressing 4-body formulas

cc13

UHF-CCSD/cc-pVDZ \(^{3}B_1\) CH2 geometry optimization via analytic gradients

fnocc5

Test FNO-DF-CCSD(T) energy

dct-grad1

Various DCT analytic gradients for the O2 molecule with 6-31G basis set

dft-custom

DFT custom functional test

extern7

External potential calculation involving a Hydrogen atom and diffuse charges. Energies and gradients calculated analytically are compared against those evaluated with diffuse charges supplied to the external_potentials keyword. A minimal basis is used because this allows a direct comparison with results derived for point charge- Gaussian charge and Gaussian charge-Gaussian charge interaction energies. The point charge-Gaussian charge interaction energy is generally given by E = Q*q*erf(sqrt(z)*r), where Q is the total charge of the Gaussian charge, q is the point charge, z is the width of the Gaussian charge (au^-2), and r (au) is the distance between the point charge and the center of the Gaussian charge. A similar formula exists for the interaction energy between two Gaussian charges, but where q is the total charge of the second Gaussian charge, z is the reduced width of both Gaussian charges ((z0*z1)/(z0+z1)), and r is the distance between the centers of the Gaussian charges. Gradients can be further derived from these expressions.

dfccsd-t-grad1

DF-CCSD(T) cc-pVDZ gradients for the H2O molecule.

pywrap-checkrun-rohf

This checks that all energy methods can run with a minimal input and set symmetry.

tdscf-2

td-uhf test on triplet states of methylene (tda), wfn passing

opt7

Various constrained energy minimizations of HOOH with cc-pvdz RHF. For “fixed” coordinates, the final value is provided by the user.

cepa3

cc-pvdz H2O Test coupled-pair CISD against DETCI CISD

ddd-deriv

Sample HF/cc-pVDZ H2O computation all derivatives

explicit-am-basis

Check that basis sets can be input with explicit angular momentum format

dft1

DFT Functional Test all values update for new BraggSlater radii

dfccsdat1

DF-CCSD(AT) cc-pVDZ energy for the H2O molecule.

scf-guess-read3

Test if the the guess read in the same basis converges.

dlpnocc-4

Decane chain at different pno convergences (databases/bench12.py)

isapt2

This is a shorter version if isapt1 - does not do cube plots. See isapt1 for full details

cepa1

cc-pvdz H2O Test CEPA(1) Energy

fsapt-ext-abc2

FSAPT with external charge on dimer

fsapt-allterms

This test case shows an example of running and analyzing a standard F-SAPT0/jun-cc-pvdz procedure for HSG-18-dimer from the HSG database.

dct5

DC-06 calculation for the O2 molecule (triplet ground state). This performs geometry optimization using two-step and simultaneous solution of the response equations for the analytic gradient.

props3

DF-SCF cc-pVDZ multipole moments of benzene, up to 7th order and electrostatic potentials evaluated at the nuclear coordinates

dct4

DCT calculation for the HF+ using DC-06 functional. This performs both two-step and simultaneous update of the orbitals and cumulant using DIIS extrapolation. Four-virtual integrals are first handled in the MO Basis for the first two energy computations. In the next two the ao_basis=disk algorithm is used, where the transformation of integrals for four-virtual case is avoided. The computation is then repeated using the DC-12 functional with the same algorithms.

cisd-opt-fd

H2O CISD/6-31G** Optimize Geometry by Energies

scf7

Tests SCF gradient in the presence of a dipole field

cc1

RHF-CCSD 6-31G** all-electron optimization of the H2O molecule

mp2-def2

Test case for Binding Energy of C4H5N (Pyrrole) with CO2 using MP2/def2-TZVPP

opt-irc-2

Compute the IRC for HCN <-> NCH interconversion at the RHF/DZP level of theory.

embpot1

External potential calculation involving a TIP3P water and a QM water. Energies and gradients computed using analytic charge embedding through the external_potentials keyword are compared against those evaluated numerically through the EMBPOT functionality.

nbody-convergence

Convergence of many-body gradients of different BSSE schemes

matrix2

An example of using BLAS and LAPACK calls directly from the Psi input file, demonstrating

fsapt-ext

Quick test of external potential in F-SAPT (see fsapt1 for a real example)

omp3-4

SCS-OMP3 cc-pVDZ geometry optimization for the H2O molecule.

opt9

Various constrained energy minimizations of HOOH with cc-pvdz RHF. Cartesian-coordinate constrained optimizations of HOOH in internals.

dfomp2p5-2

DF-OMP2.5 cc-pVDZ energy for the H2O+ cation

cc5

RHF CCSD(T) cc-pVDZ frozen-core energy of C4NH4 Anion

omp3-grad1

OMP3 cc-pVDZ gradient for the H2O molecule.

sapt-dft-api

SAPT(DFT) aug-cc-pVDZ interaction energy between Ne and Ar atoms.

dfremp-1

density fitted REMP/cc-pVDZ energies for the CO2 molecule.

dlpnocc-1

comparison of DF-CCSD(T) and DLPNO-CCSD(T) In the limit of zero PNO cutoffs, DF and DLPNO should exactly match There should not be enough sparsity in water to affect the other parameters The reference DF-CCSD(T) values are stored and not rerun This is also a test of the completely in core DLPNO algorithm (hence memory is NOT toggled)

extern1

External potential calculation involving a TIP3P water and a QM water. Finite different test of the gradient is performed to validate forces.

psimrcc-fd-freq1

Mk-MRCCSD single point. \(^3 \Sigma ^-\) O2 state described using the Ms = 0 component of the triplet. Uses ROHF triplet orbitals.

nbo

Generation of NBO file

sapt-ecp

sapt0 of charged system in ECP basis set

props4

Electrostatic potential and electric field evaluated on a grid around water.

pywrap-alias

Test parsed and exotic calls to energy() like zapt4, mp2.5, and cisd are working

mints6

Patch of a glycine with a methyl group, to make alanine, then DF-SCF energy calculation with the cc-pVDZ basis set

dfep2-2

Compute three IP and 2 EA’s for the PH3 molecule

fsapt-d

Tests SAPT0-D corrections, with a variety of damping functions/parameters

dfccdl1

DF-CCDL cc-pVDZ energy for the H2O molecule.

pywrap-db1

Database calculation, so no molecule section in input file. Portions of the full databases, restricted by subset keyword, are computed by sapt0 and dfmp2 methods.

dct12

Spin-restricted DC-06 counterpart of dct1.

mints3

Test individual integral objects for correctness.

omp2-grad1

OMP2 cc-pVDZ gradient for the H2O molecule.

cc38

RHF-CC2-LR/cc-pVDZ static polarizabilities of HOF molecule.

cdomp2-2

OMP2 cc-pVDZ energy for the NO molecule.

linK-2

RKS Linear Exchange Algorithm test for benzene

soscf-large

Second-order SCF convergnece: Benzene

dft-smoke

DFT Functional Smoke Test

cc47

EOM-CCSD/cc-pVDZ on H2O2 with two excited states in each irrep

mints9

A test of the basis specification. Various basis sets are specified outright and in blocks, both orbital and auxiliary. Constructs libmints BasisSet objects through the constructor that calls qcdb.BasisSet infrastructure. Checks that the resulting bases are of the right size and checks that symmetry of the Molecule observes the basis assignment to atoms.

dfmp2-1

Density fitted MP2 cc-PVDZ/cc-pVDZ-RI computation of formic acid dimer binding energy using automatic counterpoise correction. Monomers are specified using Cartesian coordinates.

extern2

External potential calculation involving a TIP3P water and a QM water for DFMP2. Finite different test of the gradient is performed to validate forces.

dct7

DCT calculation for the triplet O2 using ODC-06 and ODC-12 functionals. Only simultaneous algorithm is tested.

cc26

Single-point gradient, analytic and via finite-differences of 2-1A1 state of H2O with EOM-CCSD

numpy-array-interface

Numpy interface testing

sapt3

SAPT2+3(CCD) aug-cc-pVDZ+midbond computation of the water dimer interaction energy, using the aug-cc-pVDZ-JKFIT DF basis for SCF and aug-cc-pVDZ-RI for SAPT.

scf-occ

force occupations in scf

pywrap-checkrun-uhf

This checks that all energy methods can run with a minimal input and set symmetry.

scf-bz2

Benzene Dimer Out-of-Core HF/cc-pVDZ

cc44

Test case for some of the PSI4 out-of-core codes. The code is given only 2.0 MB of memory, which is insufficient to hold either the A1 or B2 blocks of an ovvv quantity in-core, but is sufficient to hold at least two copies of an oovv quantity in-core.

scf-dipder

Test SCF dipole derivatives against old Psi3 reference values

props2

DF-SCF cc-pVDZ of benzene-hydronium ion, scanning the dissociation coordinate with Python’s built-in loop mechanism. The geometry is specified by a Z-matrix with dummy atoms, fixed parameters, updated parameters, and separate charge/multiplicity specifiers for each monomer. One-electron properties computed for dimer and one monomer.

density-screen-2

RKS Density Matrix based-Integral Screening Test for benzene

cc7

Tests CCENERGY’s CCSD gradient in the presence of a dipole field

tdscf-3

td-wb97x excitation energies of singlet states of h2o, wfn passing

extern5

External potential sanity check with 0 charge far away Checks if all units behave the same and energy is same as no potential

dfmp2-grad5

Tests DF-MP2 gradient in the presence of a dipole field

dct8

DCT calculation for the NH3+ radical using the ODC-12 and ODC-13 functionals. This performs both simultaneous and QC update of the orbitals and cumulant using DIIS extrapolation. Four-virtual integrals are first handled in the MO Basis for the first two energy computations. In the next computation ao_basis=disk algorithm is used, where the transformation of integrals for four-virtual case is avoided.

fd-freq-gradient-large

SCF DZ finite difference frequencies by gradients for C4NH4

opt11

Transition-state optimizations of HOOH to both torsional transition states.

dft1-alt

DFT Functional Test

opt-irc-1

Compute the IRC for HOOH torsional rotation at the RHF/DZP level of theory.

fci-h2o-2

6-31G H2O Test FCI Energy Point

extern3

External potential calculation with one Ghost atom and one point charge at the same position.

fsapt1

This test case shows an example of running and analyzing a standard F-SAPT0/jun-cc-pvdz procedure for phenol dimer from the S22 database.

sapt-dft1

SAPT(DFT) aug-cc-pVDZ interaction energy between Ne and Ar atoms.

mp2p5-grad1

MP2.5 cc-pVDZ gradient for the H2O molecule.

decontract

RHF/cc-pvdz-decontract HCl single-point energy Testing the in line -decontract option for basis sets

omp3-3

OMP3 cc-pCVDZ energy with B3LYP initial guess for the NO radical

fci-coverage

6-31G H2O Test for coverage

sapt10

usapt example with empty beta due to frozen core

mp2-grad1

MP2 cc-pVDZ gradient for the H2O molecule.

dfscf-bz2

Benzene Dimer DF-HF/cc-pVDZ

dfmp2-grad3

DF-MP2 cc-pVDZ gradients for the H2O molecule.

cc30

CCSD/sto-3g optical rotation calculation (length gauge only) at two frequencies on methyloxirane

cubeprop-frontier

ROHF frontier orbitals of CH2(s) and CH2(t).

stability1

UHF->UHF stability analysis test for BH with cc-pVDZ Test direct SCF with and without symmetry, test PK without symmetry

cc33

CC3(UHF)/cc-pVDZ H2O \(R_e\) geom from Olsen et al., JCP 104, 8007 (1996)

cc52

CCSD Response for H2O2

cc8

UHF-CCSD(T) cc-pVDZ frozen-core energy for the \(^2\Sigma^+\) state of the CN radical, with Z-matrix input.

mp2-grad2

MP2 cc-pVDZ gradient for the NO radical

nbody-multi-level

Multilevel computation of water trimer energy (geometry from J. Chem. Theory Comput. 11, 2126-2136 (2015))

fsapt-terms

F-SAPT0/jun-cc-pvdz procedure for methane dimer

mbis-ecp

MBIS regression test catching ECPs

omp2-2

OMP2 cc-pVDZ energy with ROHF initial guess orbitals for the NO radical

cdoremp-energy1

Cholesky decomposed OO-REMP/cc-pVDZ energy for the H2O molecule.

cbs-xtpl-func

optimization with method defined via cbs

cbs-xtpl-opt

Various extrapolated optimization methods for the H2 molecule

scf-response1

Compute the dipole, quadrupole, and traceless quadrupoles for water.

cisd-h2o+-0

6-31G** H2O+ Test CISD Energy Point

dfomp2-1

OMP2 cc-pVDZ energy for the H2O molecule.

cubeprop-esp

RHF orbitals and density for water.

fsapt2

A very quick correctness test of F-SAPT (see fsapt1 for a real example)

extern6

External potential calculation involving a TIP3P water and a QM water. Energies and gradients computed using analytic charge embedding through the external_potentials keyword are compared against those using a pre-computed one-electron potential matrix through the external_potentials keyword.

fnocc6

Test method/basis with disk_df

scf-cholesky-basis

incremental Cholesky filtered SCF

dfccsd-t-grad2

DF-CCSD(T) cc-pVDZ gradient for the NH molecule.

fnocc7

Test fnocc with linear dependencies

freq-isotope2

Vibrational and thermo analysis of several water isotopologs. Demonstrates Hessian reuse for different temperatures, pressures, and isotopologs

omp3-2

OMP3 cc-pCVDZ energy with ROHF initial guess for the NO radical

x2c3

Test of SFX2C-1e on Water uncontracted cc-pVDZ The reference numbers are from Lan Cheng’s implementation in Cfour

mints2-bse

Similar to mints2, but using the BSE to specify the basis sets

cisd-h2o-clpse

6-31G** H2O Test CISD Energy Point with subspace collapse

dfmp2-freq1

DF-MP2 frequency by difference of energies for H2O

scf1

RHF cc-pVQZ energy for the BH molecule, with Cartesian input.

cc2

6-31G** H2O CCSD optimization by energies, with Z-Matrix input

aediis-2

EDIIS test case from 10.1063/1.1470195

dfmp2-4

conventional and density-fitting mp2 test of mp2 itself and setting scs-mp2

cc32

CC3/cc-pVDZ H2O \(R_e\) geom from Olsen et al., JCP 104, 8007 (1996)

dct10

The multiple guesses for DCT amplitudes for ODC-12.

scf6

Tests RHF/ROHF/UHF SCF gradients

dft-b2plyp

Double-hybrid density functional B2PYLP. Reproduces portion of Table I in S. Grimme’s J. Chem. Phys 124 034108 (2006) paper defining the functional.

castup1

Test of SAD/Cast-up (mainly not dying due to file weirdness)

dfomp2-grad1

DF-OMP2 cc-pVDZ gradients for the H2O molecule.

nbody-freq

Vibrational and thermo analysis of water trimer (geometry from J. Chem. Theory Comput. 11, 2126-2136 (2015))

scf-guess-read1

Sample UHF/cc-pVDZ H2O computation on a doublet cation, using RHF/cc-pVDZ orbitals for the closed-shell neutral as a guess

mp3-grad2

MP3 cc-pVDZ gradient for the NO radical

mp2-h

check that methods can act on single atom

rasscf-sp

6-31G** H2O Test RASSCF Energy Point will default to only singles and doubles in the active space

dfmp2-freq2

DF-MP2 frequency by difference of energies for H2O

omp2-grad2

OMP2 cc-pVDZ gradient for the NO radical

scf-property

UFH and B3LYP cc-pVQZ properties for the CH2 molecule.

sapt7

SAPT0 open-shell computation of H2O-HO2 interaction energy First with cc-pVDZ and density fitted integrals with UHF Then with 6-31g and direct integrals, except for dispersion that is computed with cc-pVDZ-ri density fitting with UHF.

dfccd-grad1

DF-CCSD cc-pVDZ gradients for the H2O molecule.

fci-tdm

He2+ FCI/cc-pVDZ Transition Dipole Moment

fsapt-ext-abc

FSAPT with external charge on trimer

cc25

Single point gradient of 1-2B2 state of H2O+ with EOM-CCSD

pywrap-all

Intercalls among python wrappers- database, cbs, optimize, energy, etc. Though each call below functions individually, running them all in sequence or mixing up the sequence is aspirational at present. Also aspirational is using the intended types of gradients.

fsapt-diff1

This test case shows an example of running and analyzing a difference F-SAPT0/jun-cc-pvdz procedure for phenol dimer from the S22 database.

fsapt-ext-abc-au

analog of fsapt-ext-abc with molecule and external potentials in Bohr

tdscf-7

TD-HF test variable access

olccd3

OLCCD cc-pVDZ energy with ROHF initial guess for the NO radical

tu6-cp-ne2

Example potential energy surface scan and CP-correction for Ne2

dfrasscf-sp

6-31G** H2O Test RASSCF Energy Point will default to only singles and doubles in the active space

cc4a

RHF-CCSD(T) cc-pVQZ frozen-core energy of the BH molecule, with Cartesian input. This version tests the FROZEN_DOCC option explicitly

cc27

Single point gradient of 1-1B2 state of H2O with EOM-CCSD

fd-gradient

SCF STO-3G finite-difference tests

nbody-nocp-gradient

Computation of NoCP-corrected water trimer gradient (geometry from J. Chem. Theory Comput. 11, 2126-2136 (2015))

psithon1

Spectroscopic constants of H2, and the full ci cc-pVTZ level of theory

dfmp2-2

Density fitted MP2 energy of H2, using density fitted reference and automatic looping over cc-pVDZ and cc-pVTZ basis sets. Results are tabulated using the built in table functions by using the default options and by specifiying the format.

fci-h2o-fzcv

6-31G H2O Test FCI Energy Point

dfomp2-2

OMP2 cc-pVDZ energy for the NO molecule.

sapt2

SAPT0 aug-cc-pVDZ computation of the benzene-methane interaction energy, using the aug-pVDZ-JKFIT DF basis for SCF, the aug-cc-pVDZ-RI DF basis for SAPT0 induction and dispersion, and the aug-pVDZ-JKFIT DF basis for SAPT0 electrostatics and induction. This example uses frozen core as well as asyncronous I/O while forming the DF integrals and CPHF coefficients.

cc8a

ROHF-CCSD(T) cc-pVDZ frozen-core energy for the \(^2\Sigma^+\) state of the CN radical, with Cartesian input.

cc13c

Tests RHF CCSD(T)gradients

dft-reference

MP2 with a PBE0 reference computation

opt-freeze-coords

SCF/cc-pVDZ optimization example with frozen cartesian

mpn-bh

MP(n)/aug-cc-pVDZ BH Energy Point, with n=2-19. Compare against M. L. Leininger et al., J. Chem. Phys. 112, 9213 (2000)

opt12

SCF cc-pVDZ geometry optimzation of ketene, starting from bent structure

scf-ecp3

Water-Argon complex with ECP present; check of UHF Hessian

dft-freq-analytic1

Analytic SVWN frequencies, compared to finite difference values

dft2

DFT Functional Test

psimrcc-ccsd_t-4

Mk-MRCCSD(T) single point. \(^1A_1\) O$_3` state described using the Ms = 0 component of the singlet. Uses TCSCF orbitals.

opt4

SCF cc-pVTZ geometry optimzation, with Z-matrix input

mp2-grad3

DF-MP2 gradient for zinc hydroxide cation Regression test for Tensor2d::back_transform dimension mismatch fix Structure: [Zn(OH)]+ cation with linear dependence elimination Uses def2-qzvppd basis with s_tolerance=1e-4 to trigger nso > nmo

opt15

6-31G(d) optimization of SF4 starting from linear bond angle that is not linear in the optimized structure but is in a symmetry plane of the molecule.

cc12

Single point energies of multiple excited states with EOM-CCSD

psimrcc-sp1

Mk-MRCCSD single point. \(^3 \Sigma ^-\) O2 state described using the Ms = 0 component of the triplet. Uses ROHF triplet orbitals.

omp2p5-2

OMP2.5 cc-pVDZ energy for the H2O molecule.

cisd-h2o+-2

6-31G** H2O+ Test CISD Energy Point

cc-module

check that CC is returning the same values btwn CC*, FNOCC, and DFOCC modules

soscf-dft

Triple and Singlet Oxygen energy SOSCF, also tests non-symmetric density matrices

cc13a

UHF-CCSD(T)/cc-pVDZ \(^{3}B_1\) CH2 geometry optimization via analytic gradients

opt1

SCF STO-3G geometry optimzation, with Z-matrix input

fnocc4

Test FNO-DF-CCSD(T) energy

dft-grad-lr1

wB97X-D cc-pVDZ gradient of S22 HCN update df/pk_ref values due to new BraggSlater radii

dfccsdt1

DF-CCSD(T) cc-pVDZ energy for the H2O molecule.

dft-grad-lr3

wB97X-D test for a large UKS molecule update ref gradient due to new BraggSlater radii

dft-custom-gga

DFT (LDA/GGA) test of custom implementations in: gga_superfuncs.py

cc9a

ROHF-CCSD(T) cc-pVDZ energy for the \(^2\Sigma^+\) state of the CN radical, with Z-matrix input.

mom-h2o-4

MOM excitation from LUMO HOMO+4

dft-grad-meta

meta-GGA gradients of water and ssh molecules reference gradients updated due to new BraggSlater radii

cc34

RHF-CCSD/cc-pVDZ energy of H2O partitioned into pair energy contributions.

mints5

Tests to determine full point group symmetry. Currently, these only matter for the rotational symmetry number in thermodynamic computations.

cc56

EOM-CCSD/6-31g excited state transition data for water cation

omp3-grad2

OMP3 cc-pVDZ gradient for the NO radical

cc13d

Tests analytic CC2 gradients

dct1

DC-06, DC-12, ODC-06 and ODC-12 calculation for the He dimer. This performs a simultaneous update of the orbitals and cumulant, using DIIS extrapolation. Four-virtual integrals are handled in the MO Basis.

scf-ecp2

Water-Argon complex with ECP present; check of RHF Hessian

mints1

Symmetry tests for a range of molecules. This doesn’t actually compute any energies, but serves as an example of the many ways to specify geometries in Psi4.

casscf-sp

CASSCF/6-31G** energy point

scf-coverage

Lithium test for coverage

sapt6

checks that all SAPT physical components (elst, exch, indc, disp) and total IE are being computed correctly for SAPT2+3(CCD)dMP2/aug-cc-pvdz and all lesser methods thereof.

omp2p5-grad1

OMP2.5 cc-pVDZ gradient for the H2O molecule.

dfomp2-grad3

Tests OMP2 gradient in the presence of a dipole field

mom-h2o-3

MOM excitation from LUMO HOMO+3

mbis-7

MBIS regression test on CH3I with iodine

olccd-grad2

OLCCD cc-pVDZ gradient for the NO radical

dft-jk

DFT JK on-disk test

dlpnocc-3

comparison of DF-CCSD(T) and DLPNO-CCSD(T) CBS Extrapolation on Ar dimer The reference DF-CCSD(T) values are stored and not rerun

scf-upcast-custom-basis

test scf castup with custom basis sets

scf-freq1

Analytic vs. finite difference DF-SCF frequency test for water.

fci-h2o

6-31G H2O Test FCI Energy Point

dft-ghost

DFT Functional Test for Range-Seperated Hybrids and Ghost atoms

fisapt-siao1

This test case shows an example of running the I-SAPT0/jun-cc-pVDZ computation for 2,4-pentanediol (targeting the intramolecular hydrogen bond between the two hydroxyl groups) The SIAO1 link partitioning algorithm is used. An F-SAPT partitioning follows I-SAPT.

cc11

Frozen-core CCSD(ROHF)/cc-pVDZ on CN radical with disk-based AO algorithm

embpot1-puream

External potential calculation involving a TIP3P water and a QM water. Pure-am sentinel variant (cc-pVDZ that includes d-functions) of embpot1.

soscf-ref

Triple and Singlet Oxygen energy SOSCF, also tests non-symmetric density matrices

opt-full-hess-every

SCF/sto-3g optimization with a hessian every step

dforemp-grad1

density fitted OO-REMP/cc-pVDZ engrad single points for the H2O molecule.

dfomp3-1

DF-OMP3 cc-pVDZ energy for the H2O molecule.

dfccsd1

DF-CCSD cc-pVDZ energy for the H2O molecule.

dfcasscf-sp

CASSCF/6-31G** energy point

sapt0-d

Tests SAPT0-D corrections, with a variety of damping functions/parameters

dfomp2-3

OMP2 cc-pVDZ energy for the H2O molecule.

mints12

test roundtrip-ness of dict repr for psi4.core.Molecule and qcdb.Molecule

dft-grad2

DF-BP86-D2 cc-pVDZ frozen core gradient of S22 HCN updated ref gradient due to new BraggSlater radii

opt3

SCF cc-pVDZ geometry optimzation, with Z-matrix input

tdscf-6

td-camb3lyp with DiskDF and method/basis specification

molden1

Test of the superposition of atomic densities (SAD) guess, using a highly distorted water geometry with a cc-pVDZ basis set. This is just a test of the code and the user need only specify guess=sad to the SCF module’s (or global) options in order to use a SAD guess. The test is first performed in C2v symmetry, and then in C1.

dforemp-grad2

density fitted OO-REMP/cc-pVDZ engrad single points for the H2O+ molecule.

cc14

ROHF-CCSD/cc-pVDZ \(^{3}B_1\) CH2 geometry optimization via analytic gradients

cc8b

ROHF-CCSD cc-pVDZ frozen-core energy for the \(^2\Sigma^+\) state of the CN radical, with Cartesian input.

dct-grad3

Restricted DF-DCT ODC-12 gradient for ethylene with cc-pVDZ/cc-pVDZ-RI standard/auxiliary basis set

cc3

cc3: RHF-CCSD/6-31G** H2O geometry optimization and vibrational frequency analysis by finite-differences of gradients

mbis-2

MBIS calculation on OH- (Expanded Arrays)

opt2-fd

SCF DZ allene geometry optimzation, with Cartesian input

dft3

DFT integral algorithms test, performing w-B97 RKS and UKS computations on water and its cation, using all of the different integral algorithms. This tests both the ERI and ERF integrals.

phi-ao

Test computing values of basis functions (puream and non-puream) at points

tu2-ch2-energy

Sample UHF/6-31G** CH2 computation

pywrap-align

apply linear fragmentation algorithm to a water cluster

mints15

check SP basis Fortran exponent parsing

rasci-h2o

RASCI/6-31G** H2O Energy Point

cc4

RHF-CCSD(T) cc-pVQZ frozen-core energy of the BH molecule, with Cartesian input. After the computation, the checkpoint file is renamed, using the PSIO handler.

cc50

EOM-CC3(ROHF) on CH radical with user-specified basis and properties for particular root

scf-uhf-grad-nobeta

UHF gradient for a one-electron system (no beta electrons).

stability2

ROHF stability analysis check for CN with cc-pVDZ. This test corresponds to the rohf-stab test from Psi3.

dct6

DCT calculation for the triplet O2 using DC-06 and DC-12. Only two-step algorithm is tested.

opt1-fd

SCF STO-3G geometry optimzation, with Z-matrix input, by finite-differences

olccd-freq1

OLCCD cc-pVDZ freqs for C2H2

dfcasscf-fzc-sp

CASSCF/6-31G** energy point

tdscf-1

td-uhf test on triplet states of methylene (rpa)

scf-response2

Compute the dipole polarizability for water with custom basis set.

fd-freq-energy-large

SCF DZ finite difference frequencies by energies for C4NH4

dlpnocc-2

comparison of DF-CCSD(T) and DLPNO-CCSD(T) without frozen core Also a test of very_tight parameters Methane geometry from HTBH.py in databases The reference DF-CCSD(T) values are stored and not rerun This also tests the low memory overlap/disk algorithms available

frac-sym

Fractional occupation with symmetry

mints-helper

A general test of the MintsHelper function

density-screen-1

RHF Density Matrix based-Integral Screening Test for water

cbs-xtpl-nbody

RHF interaction energies using nbody and cbs parts of the driver Ne dimer with mp2/v[dt]z + d:ccsd(t)/vdz

opt14

6-31G(d) optimization of SF4 starting from linear bond angle that is not linear in the optimized structure but is in a symmetry plane of the molecule.

cc49

EOM-CC3(UHF) on CH radical with user-specified basis and properties for particular root

cc10

ROHF-CCSD cc-pVDZ energy for the \(^2\Sigma^+\) state of the CN radical

sapt-exch-ind-inf

SAPT(DFT) aug-cc-pVDZ interaction energy between Ne and Ar atoms.

sapt-exch-ind30-inf

SAPT2+3 with S^inf exch-ind30 Geometries taken from the S66x10 database, the shortest-range point (R = 0.7 R_e)

cbs-xtpl-dict

Extrapolated water energies

pywrap-molecule

Check that C++ Molecule class and qcdb molecule class are reading molecule input strings identically

fnocc2

Test G2 method for H2O

omp2-4

SCS-OMP2 cc-pVDZ geometry optimization for the H2O molecule.

cc54

CCSD dipole with user-specified basis set

pywrap-align-chiral

testing aligner on enantiomers based on Table 1 of 10.1021/ci100219f aka J Chem Inf Model 2010 50(12) 2129-2140

sad-scf-type

Test SAD SCF guesses on noble gas atom

scf5

Test of all different algorithms and reference types for SCF, on singlet and triplet O2, using the cc-pVTZ basis set.

matrix1

An example of using BLAS and LAPACK calls directly from the Psi input file, demonstrating matrix multiplication, eigendecomposition, Cholesky decomposition and LU decomposition. These operations are performed on vectors and matrices provided from the Psi library.

linK-3

UHF and ROHF Linear Exchange Algorithm test for benzyl cation

dfmp2-grad2

DF-MP2 cc-pVDZ gradient for the NO molecule.

scf2

RI-SCF cc-pVTZ energy of water, with Z-matrix input and cc-pVTZ-RI auxilliary basis.

dft-psivar

HF and DFT variants single-points on zmat methane, mostly to test that PSI variables are set and computed correctly. Now also testing that CSX harvesting PSI variables correctly update ref_dft_2e/xc due to new BraggSlater radii

fd-freq-gradient

SCF STO-3G finite-differences frequencies from gradients for H2O

scf3

File retention, docc, socc, and bond distances specified explicitly.

opt2

SCF DZ allene geometry optimization, with Cartesian input, first in c2v symmetry, then in Cs symmetry from a starting point with a non-linear central bond angle.

ci-property

CI/MCSCF cc-pvDZ properties for Potassium nitrate (rocket fuel!)

ci-multi

BH single points, checking that program can run multiple instances of DETCI in a single input, without an intervening clean() call

opt5

6-31G** UHF CH2 3B1 optimization. Uses a Z-Matrix with dummy atoms, just for demo and testing purposes.

cisd-sp

6-31G** H2O Test CISD Energy Point

sapt-dft-lrc

SAPT(DFT) aug-cc-pVDZ interaction energy between Ne and Ar atoms.

nbody-hessian

Computation of VMFC-corrected HF dimer Hessian

dfccsdl1

DF-CCSDL cc-pVDZ energy for the H2O molecule.

dft-dens-cut

LibXC density screening test. Tests empty, C-only, X-only and XC superfunctionals. ‘super_mix’ showcases how to use different screening values for X and C parts. SCF will fail or crash (nans) without screening!

scf-level-shift-uhf

SCF level shift on a UHF computation

dft-custom-hybrid

DFT (hybrids) test of implementations in: hybrid_superfuncs.py

zora

Test of ZORA Reference values computed with equivalent ZORA code in pyscf. Grid options were matched as close as possible.

dfmp2-fc

Kr–Kr nocp energies with all-electron basis set to check frozen core

mp2p5-grad2

MP2.5 cc-pVDZ gradient for the NO radical

dct-grad4

Unrestricted DF-DCT ODC-12 gradient for O2 with cc-pVTZ/cc-pVTZ-RI standard/auxiliary basis set

scf-hess1

RHF STO-3G (Cartesian) and cc-pVDZ (spherical) water Hessian test, against Psi3 reference values.

extern4

External potential calculation involving a TIP3P water and a QM water. Gradient on the external charges is compared to gradient on the QM atoms to validate the gradient on the charges.

mcscf1

ROHF 6-31G** energy of the \(^{3}B_1\) state of CH2, with Z-matrix input. The occupations are specified explicitly.

mbis-4

MBIS calculation on NaCl

mbis-1

MBIS calculation on H2O

scf-guess-read2

Test if the the guess read in the same basis converges.

nbody-multi-level-2

many-body different levels of theory on each body of helium tetramer

linK-1

RHF Linear Exchange Algorithm test for water

dfomp2-4

OMP2 cc-pVDZ energy for the NO molecule.

freq-isotope1

Vibrational and thermo analysis of several water isotopologs. Demonstrates Hessian reuse for different temperatures and pressures but not for different isotopologs.

scf-auto-cholesky

Cholesky filter a complete basis

lccd-grad1

LCCD cc-pVDZ gradient for the H2O molecule.

dct3

DC-06 calculation for the He dimer. This performs a simultaneous update of the orbitals and cumulant, using DIIS extrapolation. Four-virtual integrals are handled in the AO Basis, using integrals stored on disk.

x2c-perturb-h

Test SFX2C-1e with a static electric field on He aug-cc-pVTZ

dft-grad-lr2

Tests CAM gradients with and without XC pieces to narrow grid error

cc40

RHF-CC2-LR/cc-pVDZ optical rotation of H2O2. gauge = length, omega= (589 355 nm)

scf-level-shift-rks

SCF level shift on an RKS computation

olccd-grad1

OLCCD cc-pVDZ gradient for the H2O molecule.

dft-freq

Frequencies for H2O B3LYP/6-31G* at optimized geometry

dft-custom-mgga

updated dldf reference to new BraggSlater radii Dispersionless density functional (dlDF+D) internal match to Psi4 Extensive testing has been done to match supplemental info of Szalewicz et. al., Phys. Rev. Lett., 103, 263201 (2009) and Szalewicz et. al., J. Phys. Chem. Lett., 1, 550-555 (2010)

sapt5

SAPT0 aug-cc-pVTZ computation of the charge transfer energy of the water dimer.

dfomp2p5-grad1

DF-OMP2.5 cc-pVDZ gradients for the H2O molecule.

cc45

RHF-EOM-CC2/cc-pVDZ lowest two states of each symmetry of H2O.

frac-ip-fitting

Omega optimization for LRC functional wB97 on water

ddd-function-kwargs

check distributed driver is correctly passing function kwargs

dfomp3-2

DF-OMP3 cc-pVDZ energy for the H2O+ cation

mbis-5

MBIS calculation on ZnO

cc42

RHF-CC2-LR/STO-3G optical rotation of (S)-methyloxirane. gauge = length, omega = (589 355 nm)

dfmp2-3

DF-MP2 cc-pVDZ frozen core gradient of benzene, computed at the DF-SCF cc-pVDZ geometry

oremp-grad1

integral conventional OO-REMP/cc-pVDZ engrad single points for the H2O molecule.

dft-custom-dhdf

DSD-PBEP86 S22 Ammonia test

casscf-fzc-sp

CASSCF/6-31G** energy point

x2c2

Test of SFX2C-1e on Water cc-pVDZ-DK. In this test the Dirac equation is solved in the uncontracted cc-pVDZ-DK basis. The reference numbers are from Lan Cheng’s implementation in Cfour

casscf-semi

CASSCF/6-31G** energy point. Check energy with frozen core/virtual orbs. after semicanonicalization.

cc55

EOM-CCSD/6-31g excited state transition data for water with two excited states per irrep

castup2

SCF with various combinations of pk/density-fitting, castup/no-castup, and spherical/cartesian settings. Demonstrates that puream setting is getting set by orbital basis for all df/castup parts of calc. Demonstrates that answer doesn’t depend on presence/absence of castup. Demonstrates (by comparison to castup3) that output file doesn’t depend on options (scf_type) being set global or local. This input uses global.

opt13

B3LYP cc-pVDZ geometry optimzation of phenylacetylene, starting from not quite linear structure updated reference due to new BraggSlater radii

cc43

RHF-CC2-LR/STO-3G optical rotation of (S)-methyloxirane. gauge = both, omega = (589 355 nm)

isapt1

This test case shows an example of running and analyzing an FI-SAPT0/jun-cc-pvdz computation for 2,4-pentanediol (targeting the intramolecular hydrogen bond between the two hydroxyl groups)

cc46

EOM-CC2/cc-pVDZ on H2O2 with two excited states in each irrep

scf-hess5

DF SCF 6-31G analytical vs finite-difference tests Tests DF UHF hessian code for Ca != Cb

isapt-siao1

This test case shows an example of running the I-SAPT0/jun-cc-pVDZ computation for 2,4-pentanediol (targeting the intramolecular hydrogen bond between the two hydroxyl groups) The SIAO1 link partitioning algorithm is used.

omp2p5-grad2

OMP2.5 cc-pVDZ gradient for the NO radical

cc51

EOM-CC3/cc-pVTZ on H2O

mints10

H2 with tiny basis set, to test basis set parser’s handling of integers

tu5-sapt

Example SAPT computation for ethene*ethine (i.e., ethylene*acetylene), test case 16 from the S22 database

sapt8

SAPT0(ROHF) open-shell computation of CN - Ne interaction energy First with jun-cc-pVDZ and density fitted integrals with ROHF Then with cc-pVDZ and direct integrals, except for dispersion that is computed with cc-pVDZ-ri density fitting with ROHF.

props1

RHF STO-3G dipole moment computation, performed by applying a finite electric field and numerical differentiation.

dfccsdt2

DF-CCSD(T) cc-pVDZ energy for the NH molecule.

dct9

UHF-ODC-12 and RHF-ODC-12 single-point energy for H2O. This performs a simultaneous update of orbitals and cumulants, using DIIS extrapolation. Four-virtual integrals are handled in the AO basis, where integral transformation is avoided. In the next RHF-ODC-12 computation, AO_BASIS=NONE is used, where four-virtual integrals are transformed into MO basis.

cbs-parser

mtd/basis syntax examples

fsapt-d4

Tests SAPT0-D corrections, with a variety of damping functions/parameters

dfmp2f12-1

comparison of MP2-F12 with MPQC4 Note: MPQC4 does not use robust DF for DF-MP2-F12 MP2 convergence requires that e_conv and d_conv are 1e-10

tu1-h2o-energy

Sample HF/cc-pVDZ H2O computation

cbs-xtpl-gradient

Various gradients for a strained helium dimer and water molecule

dfccsdat2

DF-A-CCSD(T) cc-pVDZ energy for the NH molecule.

dfmp2-grad1

DF-MP2 cc-pVDZ gradients for the H2O molecule.

cc37

CC2(UHF)/cc-pVDZ energy of H2O+.

ao-dfcasscf-sp

CASSCF/6-31G** energy point

stability3

Test LDA stability analysis against QChem.

mbis-3

MBIS calculation on OH radical

basis-ecp

check mixing ECP and non-ECP orbital/fitting basis sets in a session

isapt-charged

This test case shows an example of running the I-SAPT0/aug-cc-pVDZ computation for a positively charged system, illustrating the cation-pi interaction. The SIAO1 link partitioning algorithm is used. The system is taken from http://dx.doi.org/10.1016/j.comptc.2014.02.008

pywrap-bfs

apply linear fragmentation algorithm to a water cluster

cdremp-1

Cholesky decomposed REMP/cc-pVDZ energies for the CO2 molecule.

fnocc1

Test QCISD(T) for H2O/cc-pvdz Energy

scf-response3

UHF Dipole Polarizability Test

cc28

CCSD/cc-pVDZ optical rotation calculation (length gauge only) on Z-mat H2O2

tu4-h2o-freq

Optimization followed by frequencies H2O HF/cc-pVDZ

nbody-he-cluster

MP2/aug-cc-pv[DT]Z many body energies of an arbitrary Helium complex Size vs cost tradeoff is rough here

oremp-grad2

integral conventional OO-REMP/cc-pVDZ engrad single points for the H2O molecule. single point energies were independently checked using the original wavels code

dfomp2p5-grad2

DF-OMP2.5 cc-pVDZ gradients for the H2O+ cation.

x2c1

Test of SFX2C-1e on water uncontracted cc-pVDZ-DK The reference numbers are from Lan Cheng’s implementation in Cfour

cc23

ROHF-EOM-CCSD/DZ analytic gradient lowest \(^{2}B_1\) state of H2O+ (A1 excitation)

dfmp2-ecp

Ne-Xe dimer MP2 energies with ECP, with electrons correlated then frozen.

scf-guess

Test initial SCF guesses on FH and FH+ in cc-pVTZ basis

pubchem2

Superficial test of PubChem interface

tdscf-4

td-wb97x singlet excitation energies of methylene (tda)

dfcasscf-sa-sp

Example of state-averaged CASSCF for the C2 molecule

nbody-vmfc-hessian

Computation of VMFC-corrected water trimer Hessian (geometry from J. Chem. Theory Comput. 11, 2126-2136 (2015))

molden2

Test of the superposition of atomic densities (SAD) guess, using a highly distorted water geometry with a cc-pVDZ basis set. This is just a test of the code and the user need only specify guess=sad to the SCF module’s (or global) options in order to use a SAD guess. The test is first performed in C2v symmetry, and then in C1.

sapt-compare

SAPT0 aug-cc-pVDZ computation of the water-water interaction energy, using the three SAPT codes.

sapt-exch-disp-inf

SAPT0 with S^inf exch-disp20

dct11

Restricted DF-DCT ODC-12 energies with linearly dependent basis functions

pywrap-db3

Test that Python Molecule class processes geometry like psi4 Molecule class.

scf-level-shift-rohf

SCF level shift on an ROHF computation

dft-grad1

DF-BP86-D2 cc-pVDZ frozen core gradient of S22 HCN update ref gradient due to new BraggSlater radii

mints4

A demonstration of mixed Cartesian/ZMatrix geometry specification, using variables, for the benzene-hydronium complex. Atoms can be placed using ZMatrix coordinates, whether they belong to the same fragment or not. Note that the Cartesian specification must come before the ZMatrix entries because the former define absolute positions, while the latter are relative.

cubeprop

RHF orbitals and density for water.

dfomp3-grad2

DF-OMP3 cc-pVDZ gradients for the H2O+ cation.

pywrap-cbs1

Various basis set extrapolation tests

remp-energy2

integral conventional unrestricted REMP/cc-pVDZ energies for the H2O+ molecule. results were independently verified against the initial wavels implementation

olccd1

OLCCD cc-pVDZ energy for the H2O molecule.

opt16

SCF 6-31G(d) optimization of TS for HCN to HNC Performs finite difference hessian calculation. Then optimizes using previous orbitals for scf guess, in subsequent calculations. The last two displacements of the hessian break the plane of symemtry, This test confirms that only the reference geometry, with the correct symmetry, writes orbitals to disk. SCF will fail (ValidationError) otherwise.

dft-grac

Gradient regularized asymptotic correction (GRAC) test.

ao-casscf-sp

CASSCF/6-31G** energy point

opt8

Various constrained energy minimizations of HOOH with cc-pvdz RHF. Cartesian-coordinate constrained optimizations of HOOH in Cartesians.

frac-traverse

Scan fractional occupation of electrons updated values due to new BraggSlater radii

dft-grad-disk

A range-seperated gradient for SO2 to test disk algorithms by explicitly setting low memory

sapt-dft2

SAPT(DFT) aug-cc-pVDZ computation for the water dimer interaction energy.

dfremp-2

density fitted REMP/cc-pVDZ energies for the CH3 radical

psithon2

Accesses basis sets, databases, plugins, and executables in non-install locations

ghosts

Density fitted MP2 cc-PVDZ/cc-pVDZ-RI computation of formic acid dimer binding energy using explicit specification of ghost atoms. This is equivalent to the dfmp2_1 sample but uses both (equivalent) specifications of ghost atoms in a manual counterpoise correction.

cc15

RHF-B-CCD(T)/6-31G** H2O single-point energy (fzc, MO-basis \(\langle ab|cd \rangle\))

tdscf-5

td-camb3lyp with DiskDF and method/basis specification

cc19

CCSD/cc-pVDZ dipole polarizability at two frequencies

fci-dipole

6-31G H2O Test FCI Energy Point

cc35

CC3(ROHF)/cc-pVDZ H2O \(R_e\) geom from Olsen et al., JCP 104, 8007 (1996)

cepa-module

routing check on lccd, lccsd, cepa(0).

cc13b

Tests RHF CCSD(T)gradients

cc6

Frozen-core CCSD(T)/cc-pVDZ on C4H4N anion with disk ao algorithm

cbs-xtpl-energy-conv

Extrapolated water energies - conventional integrals version

olccd2

OLCCD cc-pVDZ energy with B3LYP initial guess for the NO radical

dft-b3lyp

Check flavors of B3LYP (b3lyp3/b3lyp5) against other programs

cc17

Single point energies of multiple excited states with EOM-CCSD

dfccd1

DF-CCD cc-pVDZ energy for the H2O molecule.

opt6

Various constrained energy minimizations of HOOH with cc-pvdz RHF Internal-coordinate constraints in internal-coordinate optimizations.

mcscf2

TCSCF cc-pVDZ energy of asymmetrically displaced ozone, with Z-matrix input.

psimrcc-fd-freq2

Mk-MRCCSD frequencies. \(^1A_1\) O$_3` state described using the Ms = 0 component of the singlet. Uses TCSCF orbitals.

cisd-h2o+-1

6-31G** H2O+ Test CISD Energy Point

psimrcc-pt2

Mk-MRPT2 single point. \(^1A_1\) F2 state described using the Ms = 0 component of the singlet. Uses TCSCF singlet orbitals.

pubchem1

Benzene vertical singlet-triplet energy difference computation, using the PubChem database to obtain the initial geometry, which is optimized at the HF/STO-3G level, before computing single point energies at the RHF, UHF and ROHF levels of theory.

sapt11

sapt example with orbital freezing with alkali metal and dMP2

scf-hess4

DF SCF 6-31G UHFl vs RHF test Tests DF UHF hessian code for Ca = Cb

dft-omega

Test omega is setable updated wb97x_20,wb97x_03 to account for new BraggSlater radii

dct-grad2

RHF-ODC-12 analytic gradient computations for H2O use AO_BASIS=DISK and AO_BASIS=NONE, respectively. RHF-ODC-06 analytic gradient computations for H2O use AO_BASIS=DISK and AO_BASIS=NONE, respectively.

mints8

Patch of a glycine with a methyl group, to make alanine, then DF-SCF energy calculation with the cc-pVDZ basis set

dfmp2-grad4

DF-MP2 cc-pVDZ gradient for the NO molecule.

psimrcc-ccsd_t-3

Mk-MRCCSD(T) single point. \(^1A_1\) CH2 state described using the Ms = 0 component of the singlet. Uses RHF singlet orbitals.

cepa2

cc-pvdz H2O Test ACPF Energy/Properties

freq-masses

check nonphysical masses possible

mints-benchmark

run some BLAS benchmarks

lccd-grad2

LCCD cc-pVDZ gradient for the NO radical

mp2f12-1

comparison of MP2-F12 with MPQC4 Note: MPQC4 does not use robust DF for DF-MP2-F12 MP2 convergence requires that e_conv and d_conv are 1e-10

cc18

RHF-CCSD-LR/cc-pVDZ static polarizability of HOF

cc24

Single point gradient of 1-2B1 state of H2O+ with EOM-CCSD

cbs-xtpl-wrapper

RHF aug-cc-pVQZ energy for the BH molecule, with Cartesian input. Various gradients for a strained helium dimer and water molecule

cdoremp-energy2

density fitted OO-REMP/cc-pVDZ engrad single points for the H2O+ molecule.

scf-level-shift-cuhf

SCF level shift on a CUHF computation

sapt9

usapt example with empty beta

frac

Carbon/UHF Fractionally-Occupied SCF Test Case

cdomp2-1

OMP2 cc-pVDZ energy for the H2O molecule.

cc31

CCSD/sto-3g optical rotation calculation (both gauges) at two frequencies on methyloxirane

mom

Maximum Overlap Method (MOM) Test. MOM is designed to stabilize SCF convergence and to target excited Slater determinants directly.

omp3-1

OMP3 cc-pVDZ energy for the H2O molecule

rasci-c2-active

6-31G* C2 Test RASCI Energy Point, testing two different ways of specifying the active space, either with the ACTIVE keyword, or with RAS1, RAS2, RESTRICTED_DOCC, and RESTRICTED_UOCC

nbody-intermediates

HF/cc-pVDZ many body energies of an arbitrary noble gas trimer complex Size vs cost tradeoff is rough here

remp-energy1

integral conventional REMP/cc-pVDZ energies for the H2O molecule. results were independently verified against the initial wavels implementation

psimrcc-ccsd_t-2

Mk-MRCCSD(T) single point. \(^1A_1\) CH2 state described using the Ms = 0 component of the singlet. Uses RHF singlet orbitals.

fd-freq-energy

SCF STO-3G finite-difference frequencies from energies for H2O

pywrap-basis

SAPT calculation on bimolecular complex where monomers are unspecified so driver auto-fragments it. Basis set and auxiliary basis sets are assigned by atom type.

cc41

RHF-CC2-LR/cc-pVDZ optical rotation of H2O2. gauge = both, omega = (589 355 nm)

rasci-ne

Ne atom RASCI/cc-pVQZ Example of split-virtual CISD[TQ] from Sherrill and Schaefer, J. Phys. Chem. XXX This uses a “primary” virtual space 3s3p (RAS 2), a “secondary” virtual space 3d4s4p4d4f (RAS 3), and a “tertiary” virtual space consisting of the remaining virtuals. First, an initial CISD computation is run to get the natural orbitals; this allows a meaningful partitioning of the virtual orbitals into groups of different importance. Next, the RASCI is run. The split-virtual CISD[TQ] takes all singles and doubles, and all triples and quadruples with no more than 2 electrons in the secondary virtual subspace (RAS 3). If any electrons are present in the tertiary virtual subspace (RAS 4), then that excitation is only allowed if it is a single or double.

cc9

UHF-CCSD(T) cc-pVDZ frozen-core energy for the \(^2\Sigma^+\) state of the CN radical, with Z-matrix input.

dft-vv10

He Dimer VV10 functional test. notes: DFT_VV10_B/C overwrites the NL_DISPERSION_PARAMETERS tuple updated ‘bench’ reference values for new BraggSlater radii.

scf-hess2

UHF STO-3G (Cartesian) and cc-pVDZ (spherical) water Hessian test, against Psi3 reference values. This test should match RHF values exactly

cbs-xtpl-freq

Various gradients for a strained helium dimer and water molecule

dfomp3-grad1

DF-OMP3 cc-pVDZ gradients for the H2O molecule.

cc22

ROHF-EOM-CCSD/DZ on the lowest two states of each irrep in \(^{3}B_1\) CH2.

numint1

External potential calculation involving a TIP3P water and a QM water. Energies and gradients computed using analytic charge embedding through the external_potentials keyword are compared against those evaluated numerically through the EMBPOT functionality.

mints2

A test of the basis specification. A benzene atom is defined using a ZMatrix containing dummy atoms and various basis sets are assigned to different atoms. The symmetry of the molecule is automatically lowered to account for the different basis sets.

fci-tdm-2

BH-H2+ FCI/cc-pVDZ Transition Dipole Moment

cisd-sp-2

6-31G** H2O Test CISD Energy Point

scf-ecp

Water-Argon complex with ECP present; check of energies and forces.

sad1

Test of the superposition of atomic densities (SAD) guess, using a highly distorted water geometry with a cc-pVDZ basis set. This is just a test of the code and the user need only specify guess=sad to the SCF module’s (or global) options in order to use a SAD guess. The test is first performed in C2v symmetry, and then in C1.

pywrap-checkrun-rhf

This checks that all energy methods can run with a minimal input and set symmetry.

pywrap-checkrun-convcrit

Advanced python example sets different sets of scf/post-scf conv crit and check to be sure computation has actually converged to the expected accuracy.

casscf-sa-sp

Example of state-averaged CASSCF for the C2 molecule see C. D. Sherrill and P. Piecuch, J. Chem. Phys. 122, 124104 (2005)

castup3

SCF with various combinations of pk/density-fitting, castup/no-castup, and spherical/cartesian settings. Demonstrates that puream setting is getting set by orbital basis for all df/castup parts of calc. Demonstrates that answer doesn’t depend on presence/absence of castup. Demonstrates (by comparison to castup2) that output file doesn’t depend on options (scf_type) being set global or local. This input uses local.

dct2

DC-06 calculation for the He dimer. This performs a two-step update of the orbitals and cumulant, using DIIS extrapolation. Four-virtual integrals are handled in the MO Basis.

cc53

Matches Table II a-CCSD(T)/cc-pVDZ H2O @ 2.5 * Re value from Crawford and Stanton, IJQC 98, 601-611 (1998).

dlpnomp2-3

comparison of DF-MP2 and DLPNO-MP2 with a cartesian basis set

fcidump

test FCIDUMP functionality for rhf/uhf

cc16

ROHF and UHF-B-CCD(T)/cc-pVDZ \(^{3}B_1\) CH2 single-point energy (fzc, MO-basis \(\langle ab|cd \rangle\) )

cc48

reproduces dipole moments in J.F. Stanton’s “biorthogonal” JCP paper

cbs-delta-energy

Extrapolated energies with delta correction

dlpnomp2-2

comparison of DF-MP2 and DLPNO-MP2 with a CBS extrapolation

dfccsd-grad2

DF-CCSD cc-pVDZ gradient for the NH molecule.

omp2p5-1

OMP2.5 cc-pVDZ energy for the H2O molecule.

cdremp-2

Cholesky decomposed REMP/cc-pVDZ energies for the CH3 radical

sapt1

SAPT0 cc-pVDZ computation of the ethene-ethyne interaction energy, using the cc-pVDZ-JKFIT RI basis for SCF and cc-pVDZ-RI for SAPT. Monomer geometries are specified using Cartesian coordinates.

dft-freq-analytic2

Analytic UKS SVWN frequencies, compared to finite difference values

omp3-5

SOS-OMP3 cc-pVDZ geometry optimization for the H2O molecule.

sapt-sf1

Tests the Psi4 SF-SAPT code

gibbs

Test Gibbs free energies at 298 K of N2, H2O, and CH4.

scf-hess3

CONV SCF 6-31G analytical vs finite-difference tests Tests UHF hessian code for Ca != Cb

cbs-xtpl-alpha

Extrapolated water energies

mbis-6

MBIS calculation on H2O

dfomp2p5-1

DF-OMP2.5 cc-pVDZ energy for the H2O molecule.