Nuclear Magnetic Resonance Study of the Kinetics of Ligand Exchange on the Oxovanadium(IV)-malonato Complex
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概要
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The kinetics of malonate exchange on VO(mal)<SUB>2</SUB><SUP>2−</SUP> has been studied by the NMR line-broadening method. The reaction was found to be dependent on the Hmal and hydrogen-ion concentrations, and the mechanism producing the intermediate complexes, where malonic acid was coordinated partly as an unidentate ligand, was estimated from the rate law. The activation parameters were determined for the acid-independent and acidcatalyzed paths as: <I>ΔH</I><SUP>\neweq</SUP>=8.6 kcal/mol, <I>ΔS</I><SUP>\neweq</SUP>=−16.2 e.u., and <I>ΔH</I><SUP>\neweq</SUP>=8.9 kcal/mol, <I>ΔS</I><SUP>\neweq</SUP>=−13.5 e.u.
- 公益社団法人 日本化学会の論文
著者
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Tomiyasu Hiroshi
Department Of Chemistry And Material Engineering Faculty Of Engineering Shinshu University
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ITO Satoshi
Deparetment of Internal Medicine (II), Niigata University School ofMedicine
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Tagami Shiro
Department of Chemistry, Faculty of Science, Shinshu University
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