Journal
JOURNAL OF COORDINATION CHEMISTRY
Volume 64, Issue 6, Pages 931-941Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00958972.2011.557721
Keywords
Bismuth(III) and antimony(III) complexes; Antimicrobial and pesticidal activity; Thiosemicarbazone; Semicarbazone; Spectral studies
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Funding
- U.G.C., New Delhi [34(324)/SR-I]
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Reactions of 3-acetylcoumarin with thiosemicarbazide and semicarbazide hydrochloride resulted in the formation of 3-acetylcoumarinthiosemicarbazone (C12H11N3O2S or (LH)-H-1) and 3-acetylcoumarinsemicarbazone (C12H11N3O3 or (LH)-H-2), respectively. Bi(III) and Sb(III) complexes have been synthesized by mixing metal salts in 1 : 1 and 1 : 2 molar ratios with these ligands using microwave as well as conventional heating for comparison. The authenticity of these ligands and their complexes has been established with elemental analysis, melting points, molecular weights, IR, H-1-NMR, UV, mass spectral, and X-ray powder diffraction studies. The ligands coordinated to metal as monobasic bidentate manner and tetra-and pentacoordinated geometry have been proposed around the metals. Both ligands and complexes have been screened for antimicrobial activities. The pesticidal activities of ligands and complexes against the Corcyra cephalonica have also been tested.
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