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Title: | Electron Spin Resonance Studies of Photo-oxidation by Metal Ions in Rigid Media at Low Temperatures: Part 4.—Survey of Photo-oxidation by the Uranyl Ion |
Authors: | Greatorex, D. Hill, R. J. Kemp, T. J. Stone, T. J. |
Keywords: | Chemistry Electron Spin Resonance Photo-oxidation Uranyl Ion Low-Temperature Rigid Media Journal of the Chemical Society : Faraday Transaction - I |
Issue Date: | 1972 |
Publisher: | Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (11) |
Abstract: | The long-standing problem of the mechanism of photo-oxidation of organic and inorganic molecules by the UO2+2 ion has been explored in some detail by the matrix isolation method, the detection of trapped substrate-derived radicals being effected by electron spin resonance spectroscopy, mostly using organic matrices at 77 K. A variety of mechanisms is apparent even within a given homologous series, but the most common feature is abstraction of a hydrogen atom from a carbon atom adjacent to an activating group such as —CO—, —CN, —CO2H, —CHO, —OH, —CONH2, —CO2R or from a phosphorus atom; carbon-carbon cleavage is found (sometimes exclusively) with secondary and tertiary alcohols, ketones, some carboxylic acids and diethyl ether. These results are discussed in the light of recent steady-state studies involving comparison of quantum yield and fluorescence quenching data. |
URI: | http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17043 |
Appears in Collections: | Journal Articles (before-1995) |
Files in This Item:
File | Description | Size | Format | |
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2059-2076.pdf Restricted Access | 1.34 MB | Adobe PDF | View/Open Request a copy |
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