A reinvestigation of the kinetics and mechanism of the reaction of 1,4,8,11-tetraazacyclotetradecane (cyclam) with [Cu(OH)n]2-n ions (n=3, 4) at high pH

被引:0
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作者
Josceanu, AM
Moore, P
机构
[1] Univ Politehn Bucharest, Dept Analyt Chem, Bucharest, Romania
[2] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England
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O6 [化学];
学科分类号
0703 ;
摘要
Reinvestigation of the reaction of cyclam with Cu(II) over an extended UV wavelength range, in a base concentration range 10(-3)-10(-1) mol dm(-3), showed a more complex behavior than that previously reported. It was noticed that the rapid bimolecular binding was followed by two slower first-order processes. The reaction mechanism proposed to explain the experimental facts assumes that the complex formed during the rapid stage undergoes two slow isomerisation processes, in order to acquire its thermodynamically stable conformation found in the solid state.
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页码:31 / 38
页数:8
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