Microwave assisted synthesis, spectroscopy and biochemical aspects of lanthanum(Ⅲ) and praseodymium(Ⅲ) complexes with oxadiazole functionalised dithiocarbazinates
来源期刊：JOURNAL OF RARE EARTHS2009年第5期
论文作者：O P Pandey S K Sengupta Shweta Singh
Key words：lanthanum (Ⅲ); praseodymium (Ⅲ); dithiocarbazinates; microwave synthesis; structures; anfifungal; antibacterial; rare earths;
Abstract: The new lanthanum (Ⅲ) and praseodymium (Ⅲ) complexes of the general formula [Ln(L)3] (Ln=La(Ⅲ) or Pr(Ⅲ); LK=potassium salt of dithiocarbazinates) were prepared by both, conventional thermal and by the use of microwave technology. Elemental analyses, elec-trical conductance, magnetic moment and electronic, infrared, far-infrared, ~1H and ~(13)C NMR spectral studies were used to characterize the complexes. The molecular weights of few complexes were determined by FAB-mass spectra. Nephelauxetic ratio, covalency parameter and bonding parameter for these complexes were also calculated. The probable structures of the complexes were proposed. The antifungal and antibacterial activities of the complexes were evaluated. The activities were correlated with the structures of the compounds.
O P Pandey1，S K Sengupta2，Shweta Singh1
(1.Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur 273009, India;
2.Chemistry Department, University of Surrey, Guildford GU2 7XH, U.K.)
Abstract:The new lanthanum (Ⅲ) and praseodymium (Ⅲ) complexes of the general formula [Ln(L)3] (Ln=La(Ⅲ) or Pr(Ⅲ); LK=potassium salt of dithiocarbazinates) were prepared by both, conventional thermal and by the use of microwave technology. Elemental analyses, elec-trical conductance, magnetic moment and electronic, infrared, far-infrared, ~1H and ~(13)C NMR spectral studies were used to characterize the complexes. The molecular weights of few complexes were determined by FAB-mass spectra. Nephelauxetic ratio, covalency parameter and bonding parameter for these complexes were also calculated. The probable structures of the complexes were proposed. The antifungal and antibacterial activities of the complexes were evaluated. The activities were correlated with the structures of the compounds.
Key words:lanthanum (Ⅲ); praseodymium (Ⅲ); dithiocarbazinates; microwave synthesis; structures; anfifungal; antibacterial; rare earths;
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