期刊
ACTA PHYSICO-CHIMICA SINICA
卷 22, 期 7, 页码 836-839出版社
PEKING UNIV PRESS
DOI: 10.1016/S1872-1508(06)60036-3
关键词
cobalt(II) metal complexes; Schiff base ligands; nonlinear optical coefficients; DFT
For designing three-dimensional cobalt (H) metal complexes and Schiff base ligands, the geometry was taken from the starting structures based on the crystallographic data. The density functional theory (DFT) B3LYP/6-31g(d)-FF method was used to calculate the second-order nonlinear optical (NLO) properties of open-shell cobalt(H) metal complexes. The key finding revealed that when compared with the Schiff base ligands, the second-order NLO properties of the metal complexes do not change obviously, the reason being. that the NLO responses of cobalt (II) metal complexes are strongly related to intraligand charge transfer transitions. According to the frontier molecular orbitals, the less contribution of Co2+ in determining the NLO responses of metal complexes arise from the action of the bridging moiety in the charge transfer processes.
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