(Color online) The top chart is CCL compared with FCI energies at various double bond distances. The bottom chart shows the errors (in millihartrees) of the CCL (connected blue rhombuses), CCSD (black dashes), CCSD(T) (black crosses), and CR-CCSD(T) (black triangles) methods.
(Color online) Three-dimensional plots of HOMO-1, HOMO, LUMO, and of at various double bond distances.
The CCSD amplitudes at various bond distances, where 16 and 17 are the HOMO and LUMO, respectively.
The FCI natural orbital occupation numbers (NOONs) of the 15th–18th natural orbitals of at various bond distances.
Standard deviation (in millihartrees) of the errors of the CCL, CCSD, CCSD(T), and CR-CCSD(T) methods.
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