TY - JOUR
T1 - Intervalence excitation of the Creutz-Taube ion. Resonance Raman and time-dependent scattering studies of Franck-Condon effects
AU - Lu, Hong
AU - Petrov, Vladimir
AU - Hupp, Joseph T.
N1 - Funding Information:
We thank Laba Karki for supplying samples of the Creutz-Taube ion. We gratefully acknowledge the US Department of Energy, Office of Energy Research, Division of Chemical Sciences (Grant No. DE-FG02-87ER13808) for support of this research. JTH also gratefully acknowledges unrestricted support from the Dreyfus Foundation (Teacher-Scholar Award, 1991-96).
PY - 1995/3/31
Y1 - 1995/3/31
N2 - 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. RuN(pyrazine) and trans-RuNH3). Also active, however, are several pyrazine localized vibrations.
AB - 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. RuN(pyrazine) and trans-RuNH3). Also active, however, are several pyrazine localized vibrations.
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U2 - 10.1016/0009-2614(95)00150-3
DO - 10.1016/0009-2614(95)00150-3
M3 - Article
AN - SCOPUS:0000381571
SN - 0009-2614
VL - 235
SP - 521
EP - 527
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 5-6
ER -