Unusual behavior in the 308 nm flash photolysis of Vaska's complex

Richard H. Schultz

doi:10.1016/j.jorganchem.2003.08.033

Unusual behavior in the 308 nm flash photolysis of Vaska's complex

Richard H. Schultz

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Time-resolved IR absorption spectroscopy was used to investigate the photolysis of Vaska's Complex (VC), trans-(PPh₃)₂ Ir(CO)(Cl). Upon 308 nm photolysis, an intermediate was formed that regenerated VC on a millisecond timescale. This intermediate was not formed at the laser flash, but was generated over the course of ∼10 μs. Most unusually, there was no evidence for prompt bleach of the C-O stretch of VC upon photolysis. Evidence was presented that the intermediate from which regeneration of VC occurred was a dimeric species. Possible pathways for the generation of the dimeric intermediate are discussed.

Original language	English
Pages (from-to)	1-4
Number of pages	4
Journal	Journal of Organometallic Chemistry
Volume	688
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jorganchem.2003.08.033
State	Published - 15 Dec 2003

Bibliographical note

Funding Information:
This work was funded by the Israel Science Foundation, founded by the Israel Academy of Arts and Sciences, and by the Bar-Ilan University Research Authority. The author would like to thank Eli Perel of the Bar-Ilan University Electronics Shop for technical assistance, and all-around nice guy Dave Wink for useful discussions.

Funding

This work was funded by the Israel Science Foundation, founded by the Israel Academy of Arts and Sciences, and by the Bar-Ilan University Research Authority. The author would like to thank Eli Perel of the Bar-Ilan University Electronics Shop for technical assistance, and all-around nice guy Dave Wink for useful discussions.

Funders	Funder number
Bar-Ilan University Research Authority
Israel Academy of Arts and Sciences
Israel Science Foundation

Keywords

Infrared spectroscopy
Kinetics
Photolysis
Vaska's complex

Access to Document

10.1016/j.jorganchem.2003.08.033

Cite this

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abstract = "Time-resolved IR absorption spectroscopy was used to investigate the photolysis of Vaska's Complex (VC), trans-(PPh3)2 Ir(CO)(Cl). Upon 308 nm photolysis, an intermediate was formed that regenerated VC on a millisecond timescale. This intermediate was not formed at the laser flash, but was generated over the course of ∼10 μs. Most unusually, there was no evidence for prompt bleach of the C-O stretch of VC upon photolysis. Evidence was presented that the intermediate from which regeneration of VC occurred was a dimeric species. Possible pathways for the generation of the dimeric intermediate are discussed.",

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AB - Time-resolved IR absorption spectroscopy was used to investigate the photolysis of Vaska's Complex (VC), trans-(PPh3)2 Ir(CO)(Cl). Upon 308 nm photolysis, an intermediate was formed that regenerated VC on a millisecond timescale. This intermediate was not formed at the laser flash, but was generated over the course of ∼10 μs. Most unusually, there was no evidence for prompt bleach of the C-O stretch of VC upon photolysis. Evidence was presented that the intermediate from which regeneration of VC occurred was a dimeric species. Possible pathways for the generation of the dimeric intermediate are discussed.

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Unusual behavior in the 308 nm flash photolysis of Vaska's complex

Abstract

Bibliographical note

Funding

Keywords

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