HESSIAN_WRITE

Do write a hessian output file? If so, the filename will end in .hess, and the prefix is determined by WRITER_FILE_LABEL (if set), or else by the name of the output file plus the name of the current molecule. This keyword applies to both analytic and finite-difference Hessian computations. When a frequency analysis is requested, a JSON file with extension .vibrec is also written according to the same filename pattern.