Linkage Isomerism, Structure, and Reactivity Studies of Sulfenamide Complexes of Cobalt(III)
作者:M. J. Sisley、R. McDonald、R. B. Jordan
DOI:10.1021/ic0350584
日期:2004.8.1
sulfenamide isomers have been prepared by the known reaction of hydroxylamine-O-sulfonate with (en)(2)Co(III) thiolate complexes of aminoethanethiol, cysteine, and penicillamine and the cis dithiolate formed by N,N'-ethylene-di-penicillamine (EDP) and Co(III). It is shown that the sulfenamides undergo linkage isomerization in alkaline solution to produce their respective N-bonded linkage isomers. The addition
通过已知的羟胺-O-磺酸盐与氨基乙硫醇,半胱氨酸和青霉胺的(en)(2)Co(III)硫醇盐配合物和由N,N'-形成的顺式二硫醇盐的已知反应制备S键合的亚磺酰胺异构体乙烯二青霉胺(EDP)和Co(III)。结果表明,亚磺酰胺在碱性溶液中经历键异构化,以产生它们各自的N键键合异构体。酸的添加产生质子化的N键键合的异构体。[[en)(2)Co(NH(2)S(CH(2))(2)NH(2))](2)(S(2)O(6))(3)和[ Co((NH(2)S)(2)EDP)] Br已通过X射线晶体学测定,[[en)(2)Co(NH(2)S(CH(2) ))(2)NH(2))](3+)已通过分光光度法测定。已研究了键合异构化反应动力学的pH依赖性,并得出了S键键异构体的pK(a)值。