Spin-component Scaled MP 2 Calculations
Spin-component scaled MP2 (SCS-MP2) calculations (see S. Grimme, J. Chem. Phys. 118, 9095 (2003)) can be carried out for energies, geometries, first-order and second-order properties by specifying SPIN_SCALING=ON in addition to CALC=MP2.
Note that all SCS-MP2 calculations have to be carried out so far using REF=UHF.