ISSN:
1572-901X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary Organochromium complexes, [CrRL(H2O)]2+] (L = 1,4,8,12-tetraazacyclopentadecane; R = 1°- or 2°-alkyl, or para-substituted benzyl), are oxidized to [CrRL(H2O)]3+, which rapidly decomposes (k 3 〉 102 s−1) by homolysis of the Cr-C bond. Rate constants of the oxidation of these complexes by [IrCl6]2− range from 2.20 × 10−1 (R = Me) to 4.60 × 105 (R = 4-MeC6H4CH2)dm3 mol−1 s−1. A very negative reaction constant (−4.3) is found for the oxidation of para-substituted benzlchromium(III) complexes which, in conjunction with the results of product analysis, indicates a [CrIII/R.] type transition state.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00139097
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