Chisholm, Malcolm H. and Patmore, Nathan J. (2009) Oxalate bridged heteronuclear compounds containing MM quadruple bonds (M = Mo and W) and their radical cations. Canadian Journal of Chemistry, 87 (1). pp. 88-94. ISSN 0008-4042
Metadata only available from this repository.Abstract
The heteronuclear MM quadruply bonded oxalate bridged compound [(t-BuCO2)3MoW]2(µ-C2O4) (I) has been prepared from the reaction between MoW(O2Ct-Bu)4 and oxalic acid and characterized by elemental analysis, 1H NMR and UV-vis spectroscopy, and electrochemical studies. Single electron oxidation of I by reaction with Ag+PF6– leads to the formation of the kinetically labile radical cation I+, which has been characterized by UV-vis, NIR, and EPR spectroscopy. The latter results are compared with the properties of their related homonuclear Mo4- and W4-oxalate bridged compounds and their respective radical cations. The spectroscopic features of the related radical cations [(t-BuCO2)6MoxWy(µ-C2O4)]+, where x = 1, 2, 3 and y = 4 – x, are also described with the conclusion that the [(t-BuCO2)3Mo2(µ-C2O4)W2(O2Ct-Bu)3]+ and [(t-BuCO2)3Mo2(µ-C2O4)MoW (O2Ct-Bu)3]+ cations are valence trapped on the Robin and Day scheme for the classification of mixed valence compounds.Key words: molybdenum, tungsten, mixed valence.
Item Type: | Article |
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Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
Schools: | School of Applied Sciences |
Related URLs: | |
Depositing User: | Sharon Beastall |
Date Deposited: | 02 Apr 2014 09:16 |
Last Modified: | 28 Aug 2021 11:36 |
URI: | http://eprints.hud.ac.uk/id/eprint/19936 |
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