Picosecond transient-IR absorption of unsaturated transition metal complexes

Kenneth G. Spears; Liang Wang; Xinming Zhu; Steven M. Arrivo

doi:10.1117/12.17906

1 April 1990 Picosecond transient-IR absorption of unsaturated transition metal complexes

Kenneth G. Spears, Liang Wang, Xinming Zhu, Steven M. Arrivo

Proceedings Volume 1209, Picosecond and Femtosecond Spectroscopy from Laboratory to Real World; (1990) https://doi.org/10.1117/12.17906
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

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.

Citation Download Citation

Kenneth G. Spears, Liang Wang, Xinming Zhu, and Steven M. Arrivo "Picosecond transient-IR absorption of unsaturated transition metal complexes", Proc. SPIE 1209, Picosecond and Femtosecond Spectroscopy from Laboratory to Real World, (1 April 1990); https://doi.org/10.1117/12.17906

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