๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Intervalence excitation of the Creutz-Taube ion. Resonance Raman and time-dependent scattering studies of Franck-Condon effects

โœ Scribed by Hong Lu; Vladimir Petrov; Joseph T. Hupp

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
516 KB
Volume
235
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

โœฆ Synopsis

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.

๐Ÿ“œ SIMILAR VOLUMES

Radical anion and Meisenheimer complexes
Radical anion and Meisenheimer complexes arising from interaction of the hydroxyl ion or aliphatic amines with photoexcited 4-nitroveratrole studied by electron spin resonance and time-resolved resonance Raman scattering
โœ Alexander M.J. van Eijk; A. Herbert Huizer; Cyril A.G.O. Varma ๐Ÿ“‚ Article ๐Ÿ“… 1991 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 816 KB

An electron spin resonance study of the reaction of aliphatic amines and OH-with 4nitroveratrole (NV) in its lowest electronic triplet state is presented. It is concluded that both nucleophiles transfer an electron to triplet-state NV in the first chemical step of the reaction. This is then followed