Spin-orbit ab initio study of excited state of CH2ClI cation

COMP 110

Joonghan Kim, quantum@kaist.ac.kr, Hyotcherl Ihee, and Yoon Sup Lee. Department of Chemistry, Korea Advanced Institute of Science and Technology, 335 Gwahangno 373-1 Guseong-dong Yuseong-gu, Daejeon, South Korea
Recently, it was found that the potential enery surface of halomethane cation can be affected by spin-orbit effects. The spin-orbit lower state was specified by spin-orbit DFT (SODFT) method. However, the upper state cannot be found by both SODFT and TDDFT. In this study, we have investigated the lower and upper spin-orbit states of the chloroiodomethane cation using spin-orbit ab initio calculations. The energy splitting between the lower and the upper state is in good agreement with the experiment.