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#! 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.

memory 1 GB

molecule {
     0 2
     C 0.000000  0.000000  0.000000
     N 0.000000 0.000000  2.21
     --
     0 1
     Ne 0.000000 0.000000 -6.410228688
     units bohr
     symmetry c1
     no_reorient
     no_com
}

set {
reference rohf
scf_type     df
guess        sad
basis         jun-cc-pVDZ
df_basis_scf  aug-cc-pVDZ-jkfit
df_basis_sapt aug-cc-pVDZ-ri
}

energy('sapt0')

Eelst = psi4.get_variable("SAPT ELST ENERGY")
Eexch = psi4.get_variable("SAPT EXCH ENERGY")
Eind  = psi4.get_variable("SAPT IND ENERGY")
Edisp = psi4.get_variable("SAPT DISP ENERGY")
ET    = psi4.get_variable("SAPT ENERGY")



set {
guess sad
basis cc-pVDZ
df_basis_sapt cc-pVDZ-ri
scf_type direct
}

energy('sapt0')

Eelst = psi4.get_variable("SAPT ELST ENERGY")
Eexch = psi4.get_variable("SAPT EXCH ENERGY")
Eind  = psi4.get_variable("SAPT IND ENERGY")
Edisp = psi4.get_variable("SAPT DISP ENERGY")
ET    = psi4.get_variable("SAPT ENERGY")