Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Kinetics and Mechanism of Replacement of Glycinate in Bis(glycinato)oxovanadium(IV) by Oxalate
Jung-Sung KimWoo-Sik JungHiroshi TomiyasuHiroshi Fukutomi
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1986 Volume 59 Issue 2 Pages 613-616


The kinetics of formation of bis(oxalato)oxovanadate(IV) [VO(ox)2(H2O)]2− (hereafter water molecule will be omitted) from the reaction of bis(glycinato)oxovanadium(IV) [VO(gly)2] with oxalate has been studied by the stopped-flow method. The reaction was found to consist of two consecutive steps, a relatively slow step (k1) and a fast one (k2). The values of rate constants k1 and k2 were independent of the concentration of free oxalate and of the pH of solution ranging from 4.2 to 6.5. Similar behavior was also observed in the acid decomposition of [VO(gly)2]. A mechanism passing through an intermediate, [VO(ox)(gly)], was proposed.

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