Kinetics and mechanism of replacement of glycinate in bis(glycinato)oxovanadium(IV) by oxalate.
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概要
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The kinetics of formation of bis(oxalato)oxovanadate(IV) [VO(ox)<SUB>2</SUB>(H<SUB>2</SUB>O)]<SUP>2−</SUP> (hereafter water molecule will be omitted) from the reaction of bis(glycinato)oxovanadium(IV) [VO(gly)<SUB>2</SUB>] with oxalate has been studied by the stopped-flow method. The reaction was found to consist of two consecutive steps, a relatively slow step (<I>k</I><SUB>1</SUB>) and a fast one (<I>k</I><SUB>2</SUB>). The values of rate constants <I>k</I><SUB>1</SUB> and <I>k</I><SUB>2</SUB> 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)<SUB>2</SUB>]. A mechanism passing through an intermediate, [VO(ox)(gly)]<SUP>−</SUP>, was proposed.
- 公益社団法人 日本化学会の論文
著者
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Kim Jung-sung
Research Laboratory For Nuclear Reactors Tokyo Institute Of Technology
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Fukutomi Hiroshi
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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Jung Woo-Sik
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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TOMIYASU Hiroshi
Research Laboratory for Nuclear Reactor, Tokyo Institute of Technology
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