Geometry (atomic units) O 0.000000000000000 0.000000000000000 -0.009000000000000 H 1.515263000000000 0.000000000000000 -1.058898000000000 H -1.515263000000000 0.000000000000000 -1.058898000000000 Basis set (atomic units) H S 3 3.42525091 0.15432897 0.62391373 0.53532814 0.16885540 0.44463454 O S 3 130.70932000 0.15432897 23.80886100 0.53532814 6.44360830 0.44463454 S 3 5.03315130 -0.09996723 1.16959610 0.39951283 0.38038900 0.70011547 P 3 5.03315130 0.15591627 1.16959610 0.60768372 0.38038900 0.39195739 Correlation energies (atomic units) CIS-MP2 doubles -0.02047037621353379 CIS-MP2 triples -0.01504705389684385 CIS-MP2 -0.03551743011037764 CIS(D) doubles -0.02047037621353379 CIS(D) triples -0.01826989294276462 CIS(D) -0.03874026915629841 CIS-MP3 DD -9.811253452904713E-3 CIS-MP3 DT 1.761341051662076E-3 CIS-MP3 TT -6.258871286367074E-3 CIS-MP3 -0.0143087837 CIS(3) DD -9.811253452904713E-3 CIS(3) DT 2.156093241600103E-3 CIS(3) TT -9.284884826527002E-3 MP3 -9.988138322431549E-3