INTERVALENCE EXCITATION OF THE CREUTZ-TAUBE ION - RESONANCE RAMAN AND TIME-DEPENDENT SCATTERING STUDIES OF FRANCK-CONDON EFFECTS

被引：59

作者：

LU, H ^{[1
]}

PETROV, V ^{[1
]}

HUPP, JT ^{[1
]}

机构：

[1] SI VAVILOV STATE OPT INST,ST PETERSBURG,RUSSIA

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 235卷 / 5-6期

关键词：

D O I：

10.1016/0009-2614(95)00150-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Franck-Condon effects associated with intervalence excitation of the Creutz-Taube ion (a prototypical delocalized mixed-valency system) have been evaluated via a time-dependent analysis of resonance Raman scattering intensities and the intervalence absorption lineshape. Quantitative studies in the extended near infrared (1320 nm excitation) revealed that at least eight, and possibly nine, vibrational modes are coupled to the intervalence transition. Numerical assessment of vibrational structural changes and reorganizational energy contributions showed that the most important modes, in a Franck-Condon sense, are metal-ligand stretches along the metal-bridge-metal axis (i.e. Ru-N(pyrazine) and trans-Ru-NH3). Also active, however, are several pyrazine localized vibrations.

引用

页码：521 / 527

页数：7

共 28 条

[1] A DIRECT APPROACH TO MEASURING FRANCK-CONDON BARRIER TO ELECTRON TRANSFER BETWEEN METAL IONS [J].