名称:
Synthesis, spectral and structural studies of a Mn(II) complex of [N′-(pyridine-4-carbonyl)-hydrazine]-carbodithioic acid ethyl ester and Mn(II) and Ni(II) complexes of [N′-(pyridine-4-carbonyl)-hydrazine]-carbodithioic acid methyl ester
摘要:
The new complexes [Mn(Hpchce)(2)(o-phen)], {2[Mn(pchcm)(o-phen)(2)])center dot 7H(2)O and [Ni(Hpchcm)(o-phen)(2)]Cl center dot CH3OH with [N'-(pyridine-4-carbonyl)-hydrazine]-carbodithioic acid ethyl ester (H(2)pchce) and [N'-(pyridine-4-carbonyl)-hydrazinej-carbodithioic acid methyl ester (H(2)pchcm) have been synthesized, containing o-phenanthroline (o-phen) as a coligand. These ligands and their complexes have been characterized by elemental analyses, IR, magnetic susceptibility and single crystal X-ray data. H2pchce (2), [Mn(Hpchce)(2)(o-phen)] (3) (2[Mn(pchcm)(o-phen)(2)])center dot 7H(2)O (4) and [Ni(Hpchcm)(o-phen)(2)]Cl center dot CH3OH (5) crystallized in the monoclinic system, space group Pc, C2/c, P21/n and P21/n, respectively. The (N, O) donor sites of the bidentate ligands chelate the Mn(II) and Ni(II) centers forming a five-membered CN2OM ring. The resulting complexes are paramagnetic and have a distorted octahedral geometry. (c) 2010 Elsevier Ltd. All rights reserved.