Manganese(II) complexes of 5-(4-pyridyl), 5-phenyl and 5-(4-methoxy-phenyl)-1,3,4-oxadiazole-2-thione containing 2, 2?bipyridyl/ethylenediamine: synthesis, spectral, and X-ray characterization
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- 作者：Nand K. Singh ; Manoj K. Bharty ; Surendra K. Kushawaha ; Ram Dulare and Raymond J. Butcher
- 刊名：Transition Metal Chemistry
- 出版年：2010
- 出版时间：April, 2010
- 年：2010
- 卷：35
- 期：3
- 页码：337-344
- 全文大小：422.3 KB
文摘
Three new mixed ligand complexes [Mn(4-pytone)2(bipy)2]bipy (1), [Mn(pot)2(en)2] (2) and [Mn(4-mot)2(en)2] (3) (4-pytone = 5-(4-pyridyl)-1,3,4-oxadiazole-2-thione, pot = 5-phenyl-1,3,4-oxadiazole-2-thione, 4-mot = 5-(4-methoxy-phenyl)-1,3,4-oxadiazole-2-thione) have been prepared containing bipy/en as coligands. The starting material potassium N-(aryl-carbonyl)-hydrazinecarbodithioates (RCONHNHCSSK) underwent cyclization during complexation in the presence of bipy or en to give the corresponding 5-aryl-1,3,4-oxadiazole-2-thiones. The complexes have been characterized by physicochemical techniques and single crystal X-ray structure determination. In all cases, the manganese has a six coordinate octahedral arrangement coordinated by 4N atoms of two bipy/en and two covalently bonded N atoms of the oxadiazole-2-thione anions.