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Volumes of activation for the mercury(II) induced aquation reactions of halopentaamminecobalt(III), rhodium(III) and chromium(III) ions in acidic aqueous solution

✍ Scribed by D.A. Palmer; R. van Eldik; T.P. Dasgupta; H. Kelm

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 536 KB
Volume: 34
Category: Article
ISSN: 0020-1693
DOI: 10.1016/s0020-1693(00)94683-8

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✦ Synopsis

The pressure dependencies of the rates of Hg(llj induced aquation of Co(NH,),@+, CO(NH,)~B?', WNH&cI*+, and Rh(NH3)@' were studied at 15 "C, with the exception of the latter which was investigated at 25 "C, and a [II'] of 0.31 M with p = 0.6 M. The respective volumes of activation were found to be -I. 7 f 1.0, to.8 f 0.5, +O. 7 + 0.4, and -1.0 f 0.4 cm3 mar'. These results are discussed with reference to the numerous conventional kinetic data in the literature, further establishing a D-mechanism for the rate-determining step.

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