Syntheses, crystal structures and properties of Zn(II) and Cd(II) complexes derived from N-(o-nitrophenyl)-N '-(methoxycarbonyl)thiourea(H(2)omt) and 2,2 '-bipyridine(bpy) or o-phenanthroline(phen)

摘要

The chelating properties of N-(o-nitrophenyl)-N'-(methoxycarbonyl)th (H(2)omt) were investigated through the study of the crystal structures of Cd(Homt)(2)(bpy), 1, Zn(Homt)(2)(phen), 2 and H(2)omt (bpy = 2,2'-bipyridine, phen = o-phenanthroline). The cadmium(II) ion in 1 is in a distorted octahedral geometry contributed by the two N atoms from bipyridine and the two S and the two deprotonated amine N atoms from two Homt groups [Cd-N(bpy)= 2.329(3), Cd-N(amine)= 2.360(3) and Cd-S = 2.690(1) Angstrom]. The Zn(II) ion in complex 2 is four-coordinated by the two N atoms from the o-phenanthroline and the two deprotonated amine N atoms from two Homt groups in a distorted tetrahedral fashion, in which the binding of S atom to the metal is not involved [Zn-N(phen)= 2.088(4), Zn-N(amine)= 1.998(3) Angstrom]. (C) 1998 Elsevier Science Ltd. All rights reserved. [References: 27]