Intervalence involvement of bridging ligand vibrations in hexaruthenium mixed-valence clusters probed by resonance Raman spectroscopy

被引：33

作者：

Londergan, CH

Rocha, RC

Brown, MG

Shreve, AP

Kubiak, CP

机构：

[1] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA

[2] Univ Calif San Diego, Dept Chem, La Jolla, CA 92093 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2003年 / 125卷 / 46期

关键词：

D O I：

10.1021/ja036127g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Resonance Raman spectroscopy, performed using spectroelectrochemistry and with excitation in the intervalence bands of three pyrazine-bridged, mixed-valence dimers of trinuclear ruthenium clusters, shows resonant enhancement of symmetric bridging ligand modes. The resonant enhancements and frequency shifts of these bridging ligand modes are observed as a function of varying electronic communication between charge sites, and they show that a three-state vibronic model which explicitly includes the participation of the bridging ligand is needed to explain the spectroscopic behavior of these near-delocalized complexes. Copyright © 2003 American Chemical Society.

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页码：13912 / 13913

页数：2

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