Year: 2014
Author: Shu-Yuan Yu, Cheng-Gen Zhang
Journal of Atomic and Molecular Sciences, Vol. 5 (2014), Iss. 2 : pp. 171–177
Abstract
Electronic states of the $m$-$C_6H_4F^+_2$ ion were studied by using the CASPT2 and CASSCF methods in conjunction with a contracted atomic natural orbital (ANOL) basis set. For the five lowest-lying states, geometries and adiabatic excitation energies $(T_0)$ were calculated at the CASPT2 level. The CASPT2 $T_0$ values and CASPT2 $T'_v$ values are in reasonable agreement with the available experimental data. The assignments of the $B,$ $C,$ and $D$ states of the $m$-$C_6H_4F^+_2$ ion were difficult since the three states are closely lying. Based on the CASPT2 $T_0$ calculations, the $X,$ $A,$ $B,$ $C,$ and $D$ states of the $m$-$C_6H_4F^+_2$ ion were assigned to $1^2A_2,$ $1^2B_1,$ $2^2B_1,$ $1^2A_1,$ and $1^2B_2,$ respectively, which supports the suggested assignment of the lowest excited state to $^2B_1$ by Tsuchiya et al. based on their experiments.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/jams.090213.112213a
Journal of Atomic and Molecular Sciences, Vol. 5 (2014), Iss. 2 : pp. 171–177
Published online: 2014-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 7
Keywords: CASPT2 electronic states excitation energies geometries.