Implementation of the Boys and Bernardi counterpoise correction[1] for basis set superposition error. This interface implements it for the total energy and its derivatives, five calculations are required to isolate the BSSE and remove it. For counterpoise-corrected calculations of interaction energy, use the option bsse_correction in the interaction protocol as it is more efficient (only three calculations are needed).

  1. Boys, S.; Bernardi, F. Mol. Phys. 1970, 19, 553.