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Proceedings Paper

Picosecond transient-IR absorption of unsaturated transition metal complexes
Author(s): Kenneth G. Spears; Liang Wang; Xinming Zhu; Steven M. Arrivo
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Paper Abstract

We report transient infrared spectra for the addition of perfluoroheptane to Cr(C0)5 which is created by the ultraviolet photodissociation of Cr(C0)6 in liquid perfluoroheptane. We compare both 266 nm and 297 nm excitation wavelengths and demonstrate that two product vibration bands at 1971 and 1938 cm1 are forming with a nominal 60 p5 rate constant, while fast rising and slowly decaying (80-220 ps) transients have absorption over the 1920-1983 cm1 range. These transient absorption features are assigned to Cr(C0)5 with vibrational quanta of 0,1,2 which are broadened from geometric distortions. These features decay from reaction, vibrational relaxation of GO, and vibrational relaxation of low frequency vibrational modes.

Paper Details

Date Published: 1 April 1990
PDF: 11 pages
Proc. SPIE 1209, Picosecond and Femtosecond Spectroscopy from Laboratory to Real World, (1 April 1990); doi: 10.1117/12.17906
Show Author Affiliations
Kenneth G. Spears, Northwestern Univ. (United States)
Liang Wang, Northwestern Univ. (United States)
Xinming Zhu, Northwestern Univ. (United States)
Steven M. Arrivo, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 1209:
Picosecond and Femtosecond Spectroscopy from Laboratory to Real World
Keith A. Nelson, Editor(s)

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