Unique copper ion catalyzed hydrolytic cleavage of C–N(2) bond of thiosemicarbazide
作者:S.K. Chawla、M. Arora、K. Nättinen、K. Rissanen
DOI:10.1016/j.poly.2005.05.021
日期:2006.2
For the first time, stable but coordinatively unsaturated Cu(II) complexes (Cu(2,2'-bpy)X,] - xH(2)O (X = ClO4, NO3, CH3COO and 2,2'-bpy = 2,2'-bipyridyl) have been found to promote the hydrolysis of C-N(2) bond of thiosemicarbazide (tsc) at 25 degrees C and at neutral pH yielding monomeric [Cu(2,2-bpy)(NCS)(2)]. Direct reaction between [Cu(2,2'-bPY)(2)]Cl-2 center dot 6H(2)O, KSCN and CuCl2 results in polymeric [Cu(2,2'-bpy)(NCS)2], [1] (Inorg. Chim. Acta. 286 (1999) 108]. Similarly tsc is cleaved by Cu(I) complex [Cu(phi P-3)(2)(CH3CN)(2)]ClO4 [phi P-3 = triphenylphosphinel which itself is converted into dimeric [Cu(phi P-3)(2)(NCS)](2). (c) 2005 Published by Elsevier Ltd.