Synthesis, spectral and X-ray structural studies of Ni(II) complexes of N′-acylhydrazine carbodithioic acid esters containing ethylenediamine or o-phenanthroline as coligands
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.
Abdelhamid, Abdou O.; Abdel-Riheem, Nadia A.; Emam, Hussein A., Journal of Chemical Research, Miniprint, 1999, # 9, p. 2323 - 2335
作者:Abdelhamid, Abdou O.、Abdel-Riheem, Nadia A.、Emam, Hussein A.
DOI:——
日期:——
Synthesis, characterization and biological studies of S-benzyl-β-N-(benzoyl) dithiocarbazate and its metal complexes
作者:Fiona N.-F. How、Karen A. Crouse、M. Ibrahim M. Tahir、M.T.H. Tarafder、Andrew R. Cowley
DOI:10.1016/j.poly.2008.07.022
日期:2008.10
S-Benzyl-beta-N-(benzoyl) dithiocarbazate (SBNBODTC) a new disubstituted dithio-carbazate oxygen-sulfur (CS) donor ligand derived from reaction of S-benzyl dithiocarbazate with benzoyl chloride, formed bis-chelated complexes of general formula [M(OS)(2)] where M is Cu2+, Ni2+, Cd2+, Co2+ or Pb2+ and OS is a uni-negative bidentate ligand. The ligand and its metal complexes have been characterized by a variety of physico-chemical techniques. S-benzyl-beta-N-(benzoyl) dithiocarbazate crystallized with Z ' = 2 in its thione form in cis-cis conformation, with the N-N bond adopting a cis geometry with respect to C=S while the, S-benzyl group adopts a cis geometry with respect to the thione sulfur atom across the C-S bond. SBNBODTC, Cu(OS)(2), Ni(OS)(2) and Pb(OS)(2) display marked cytotoxicity against HL-60 (human myeloid leukemia) while Cd(OS)(2) and CO(OS)(2) are moderately cytotoxic. The compounds showed moderate but selective activity towards targeted pathogens. (C) 2008 Elsevier Ltd. All rights reserved.