Conducting properties of new heterometallic one-dimensional coordination polymers derived from 1-nitroethylene-2,2-dithiolate (NED^2?) ligand and their I₂-doped products

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• 作者：Vikram Singh ; Abhinav Kumar ; Manoj K. Yadav ; Lal Bahadur Prasad ; Nanhai Singh
• 关键词：Coordination polymer ; Heterometallic ; 1-Nitroethylene-2 ; 2-dithiolate ; Semiconducting
• 刊名：Synthetic Metals
• 出版年：2013
• 出版时间：15 July, 2013
• 年：2013
• 卷：176
• 期：Complete
• 页码：65-69
• 全文大小：1022 K

文摘

Four new heterometallic coordination polymers of general formula [M₂¡äM(NED)₂] (M = Ni(II), M¡ä = Ag(I) 1 or Tl(I) 2; M = Cu(II), M¡ä = Ag(I) 3 or Tl(I) 4; NED^2? = 1-nitroethylene-2,2-dithiolate) have been synthesized and characterized by elemental analyses, IR, ESR, UV-vis and magnetic susceptibility measurements. Powder XRD patterns of the compounds (1-4) show them virtually isostructural and significantly differ from those of their I₂-doped products. All the compounds are weakly conducting at room temperature with ¦Ò_rt ¡Ö 10^?12 S cm^?1 and show behavior of semiconductors in the 300-420 K temperature range. Notably the conductivities of the I₂-doped derivatives show an enhancement of 10³ order of magnitude and also exhibit semiconducting properties.