Coordination chemistry of palladium(II) and platinum(II) complexes with bioactive Schiff bases: Synthetic,spectral, and biocidal aspects |
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Authors: | K Sharma M K Biyala M Swami N Fahmi R V Singh |
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Institution: | (1) Department of Chemistry, University of Rajasthan, Jaipur, 302004, India |
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Abstract: | The Schiff bases, 5-nitro-indol-2,3-dionehydrazinecarboxamide (HSCZ1) and 7-nitro-indol-2,3- dionehydrazinecarboxamide (HSCZ2), have been synthesized by the condensation of 5-nitro-indol-2,3-dione and 7-nitro-1H-indol-2,3-dione with semicarbazide
hydrochloride, respectively. The palladium(II) and platinum( II) complexes have been prepared by mixing palladium chloride
and platinum chloride in 1: 2 molar ratios with monobasic bidentate Schiff bases. The ligands and complexes of palladium and
platinum have been characterized by elemental analyses, melting point determinations, conductance measurements, molecular
weight determinations, and IR, 1H NMR, and UV spectral studies. These studies showed that the ligands coordinate to the metal atoms in a monobasic bidentate
mode, coordinating through oxygen and nitrogen donor systems. Thus, a tetracoordinated environment around the metal atom has
been proposed. Both the ligands and their complexes have been screened for their biological activity on several pathogenic
fungi and bacteria and were found to possess appreciable fungicidal and bactericidal properties. Plant growth regulating activity
of one of the ligands and its complexes has also been recorded on gram plant, and results have been discussed.
The article is published in the original. |
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