Synthesis, spectral and X-ray structural studies of Ni(II) complexes of N′-acylhydrazine carbodithioic acid esters containing ethylenediamine or o-phenanthroline as coligands
摘要:
The new complexes [Ni(Hbstbh)(2)(en)] (1) and [Ni(Hpchce)(o-phen)(2)]Cl center dot CH3OH center dot H2O (2) with N'-benzoyl hydrazine carbodithioic acid benzyl ester (H(2)bstbh) and [N'-(pyridine-4-carbonyl)-hydrazine]-carbodithioic acid ethyl ester (H(2)pchce) have been synthesized, containing ethylenediamine (en) or o-phenanthroline (o-phen) as coligands. The ligands and their complexes have been characterized by elemental analyses, IR, magnetic susceptibility and single crystal X-ray data. [Ni(Hbstbh)(2)(en)] (1) and [Ni(Hpchce)(o-phen)(2)]Cl center dot CH3OH center dot H2O (2) crystallized in the monoclinic and triclinic systems, space group C2/c and P - 1, respectively. The (N, O) donor sites of the bidentate ligands chelate the Ni(II) center and form a five-membered CN2ONi ring. The resulting complexes are paramagnetic and have a distorted octahedral geometry. (C) 2011 Elsevier Ltd. All rights reserved.