supported by the National Natural Science Foundation of China (Grant Nos. 20625309 and 20833003);the National Basic Research Program (Grant No. 2004CB719901);the China Postdoctoral Science Foundation (Grant No. 200904501069)
The performances of several multireference electronic structure methods including complete active space self-consistent field (CASSCF)-based second-order perturbation theory (CASPT2), multireference configuration inte...
Supported by the National Natural Science Foundation of China (Grant Nos. 20625309 and 20433020);the National Basic Research Program (Grant No. 2004CB719901);the Ministry of Education of China (Grant No. NCET-04-0450); Fok Ying Tong Education Foundation (Grant No. 91014)
The block correlated coupled cluster (BCCC) method, with the complete active-space self-consistent-field (CASSCF) reference function, has been applied to investigating the singlet-triplet gaps in several substituted c...