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Synthesis, characterization and bio-activity of metal complexes of bidentate N-S isomeric Schiff bases derived from S-methyldithiocarbazate (SMDTC) and the X-ray structure of the bis[S-methyl-β-N-(2-furyl-methylketone) dithiocarbazato]cadmium(II) complex.


Citation

Chew, Kar-Beng and Tarafder, M.T.H. and Crouse, Karen Anne and Ali, A.M. and Yamin, B.M. and Fun, H.-K. (2004) Synthesis, characterization and bio-activity of metal complexes of bidentate N-S isomeric Schiff bases derived from S-methyldithiocarbazate (SMDTC) and the X-ray structure of the bis[S-methyl-β-N-(2-furyl-methylketone) dithiocarbazato]cadmium(II) complex. Polyhedron, 23 (8). pp. 1385-1392. ISSN 0277-5387

Abstract

Condensation of SMDTC with 2-furyl-methylketone and 5-methyl-2-furaldehyde gave isomeric Schiff bases, (NS) and (NS'). The metal complexes of these uninegatively charged bidentate Schiff base ligands with cadmium, tin, iron, lead and cobalt have been prepared. The complexes have been characterized by a variety of physico-chemical techniques. X-ray crystallographic analysis shows that the Cd(II) complex, bis[S-methyl-β-N-(2-furylmethylketone)dithiocarbazato]cadmium(II), consists of two molecules with distorted octahedral structure. The Co(II) complexes are paramagnetic with a square-planar stereochemistry. The diamagnetic Sn(II), Fe(III) and Pb(II) complexes also have square-planar structures while the diamagnetic [Cd(NS')2]. 3H2O complex is tetrahedral. The [Cd(NS')2].3H2O, [Sn(N'S)2) and [Co(NS)2] showed clear inhibition of almost all bacteria and fungi tested However, [Cd(NS)2], [Fe(NS)]Cl2, [Pb(NS)2] and [Pb(NS')2] were inactive against all bacteria assayed while [Cd(NS)2], [Fe(NS)]Cl2 and [Pb(NS)2] showed clear inhibition of some fungi. The [Cd(NS)2], [Cd(NS')2].3H2O and [Co(NS)2] were found to be very active against Human cell T-lymphoblastic leukemia (CEM-SS) and cervical cancer cells (HELA) with CD50 values between 1.8 and 3.6 μl cm-3.


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Official URL: http://www.elsevier.com/

Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: Elsevier
Keywords: Dithiocarbazate; Schiff base; 2-furyl-methylketone; Cadmium(II); X-ray structure.
Depositing User: Nur Farahin Ramli
Date Deposited: 15 Aug 2013 01:00
Last Modified: 27 Nov 2015 02:08
URI: http://psasir.upm.edu.my/id/eprint/24971
Statistic Details: View Download Statistic

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