Skip to main content
. 2017 Sep 8;121(40):22295–22302. doi: 10.1021/acs.jpcc.7b08714

Table 1. Relative Energy Differences (in kJ/mol) from the CASSCF/CASPT2(11,11) and RASSCF/RASPT2(19,21) Calculations.

  CASSCF(11,11)a RASSCF(19,21)a CASPT2(11,11) RASPT2(19,21)
sextet 22.6 57.1 78.1 108.6
quartet 6.2 13.1 20.7 22.1
doublet 0 0 0 0
a

The weights of the dominant configurations demonstrate the multiconfigurational character of the doublet state, and they are 46%, 25%, 15%, and 8% (CASSCF(11,11)) and 53%, 18%, 14%, and 5% (RASSCF(19,21)).