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. 2017 Dec 4;149(1):1–9. doi: 10.1007/s00706-017-2108-4

Fig. 9.

Fig. 9

Active orbitals included in the MS-CASPT2/SA-CASSCF(8,8) calculations. When using MS-CASPT2/SA-CASSCF(4,4) only the π 3, π 4, π 5*, and π 6* are used in the active space