:term:`CFOUR_BRUECKNER <CFOUR_BRUECKNER (CFOUR)>`
"""""""""""""""""""""""""""""""""""""""""""""""""

      Specifies whether Brueckner orbitals are to be determined for the specified CC method. OFF(=0) Brueckner orbitals are not to be determined, ON (=1) they are to be determined.

      * **Type**: :ref:`boolean <op_c_boolean>`
      * **Default**: false