Solvent bandwidth dependence and band asymmetry features of charge-transfer transitions in N-pyridinium phenolates
作者:A. M. Kjaer、Jens Ulstrup
DOI:10.1021/ja00241a007
日期:1987.4
with epsilon/sub o//sup -1/ - epsilon/sub s//sup -1/, epsilon/sub o/ being the optical and epsilon/sub s/ the static dielectric constant. The molecular frequency, Omega/sub c/, and displacement, ..delta../sub c/, are not very solvent dependent, emphasizing their molecular character, and the value Omega/sub c/ approx. = 1600 cm/sup -1/ suggests that C-O, C-N, and C-C stretching is involved. (2) Bands for
他们研究了 Betaine-26 2,4,6-triphenyl-N-(di-tert-butyl-4-hydroxyphenyl)pyridinium 离子在一系列极性、非极性、质子和非质子溶剂中的溶剂化变色吸收带的形状. 多声子能带理论,包括分子模式和振动色散溶剂,表明溶剂分为三类:(1)极性非质子溶剂的能带形状被无结构的连续电介质和单个高频分子的能带很好地再现模式。溶剂增宽与 epsilon/sub o//sup -1/ - epsilon/sub s//sup -1/ 相关,epsilon/sub o/ 是光学常数,epsilon/sub s/ 是静态介电常数。分子频率 Omega/sub c/ 和位移 ..delta../sub c/ 与溶剂无关,强调它们的分子特性,和值 Omega/sub c/ 大约。= 1600 cm/sup -1/ 表明涉及 CO、CN 和 CC 拉伸。(2)