SEARCH Articles Figures Tables CCSD + T CCSD + T methods CCSD -coupled clusters CCSD amplitude equations CCSD approach CCSD approximation CCSD approximation size-consistent methods CCSD calculations CCSD calculations applications CCSD calculations benchmark testing CCSD calculations cluster configurations CCSD calculations geometries CCSD calculations structure CCSD correlation energy, defined CCSD coupled-cluster singles, doubles CCSD coupled-cluster singles, doubles approximations CCSD coupled-cluster singles, doubles calculations CCSD coupled-cluster singles, doubles triples, quadruples CCSD energies CCSD energy equation CCSD energy, defined CCSD method CCSD model CCSD model amplitude CCSD theory CCSD theory algorithm CCSD theory computational considerations CCSD theory projected equations CCSD triple excitation estimates CCSD, density functional theory CCSD-R12 method CCSD-T technique CCSD/EOMCCSD equations CCSDT, CCSD CR-CCSD CR-EOM-CCSD Calculated using coupled-cluster CCSD Closed-shells CCSD method Completely renormalized CCSD Completely renormalized CCSD approaches Completely renormalized CCSD methods Computational studies CCSD calculations Corrected CCSD Correlation consistent basis sets CCSD (coupled cluster singles Coupled cluster single double triple CCSD Coupled cluster single-double excitations CCSD) Coupled cluster singles and doubles (CCSD Coupled cluster singles and doubles CCSD) method Coupled cluster theory CCSD method Coupled-cluster CCSD and Coupled-cluster CCSD methods DIP-EOM-CCSD DIP-EOM-CCSD method DIP-STEOM-CCSD DIP-STEOM-CCSD method DK-CCSD Density functional theory CCSD level ECP-CCSD EOM-CCSD EOM-CCSD method Equation of motion coupled cluster EOM-CCSD Equation-of-motion CCSD Experimental frequencies CCSD methods Explicitly correlated CCSD theory Externally corrected CCSD Externally corrected CCSD amplitude correcting LR-CCSD MR L-CCSD MR-CCSD Naphthalene dimer, CCSD Potential energy surface coupled-cluster [CCSD R-CCSD RMR CCSD Reduced multireference methods, CCSD Reduction CCSD study Renormalized CCSD Renormalized CCSD approaches Representation of the CCSD Amplitude Equations Representation of the CCSD Energy Equation SCS-CCSD SR CCSD TD-CCSD The CCSD Amplitude Equations The CCSD Energy Equation The CCSD Valence Correlation Component of TAE The CCSD(F12) model in TURBOMOLE The CCSD(T) Model Triple excitations CCSD/EOMCCSD calculations UHF-CCSD Wavefunction methods, CCSD