Ghosh, Pritam and Roychowdhury, Additi and Corbella, Montserrat and Bhaumik, Asim and Mitra, Partha and Mobin, Shaikh M. and Mukherjee, Ayan and Basu, Soumen and Banerjee, Priyabrata (2014) Designed synthesis of CO2-promoted copper(II) coordination polymers: synthesis, structural and spectroscopic characterization, and studies of versatile functional properties. Dalton Transactions, 43. pp. 13500-13508.

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A series of CO2-promoted Cu(II) coordination polymers in different coordination environments has been synthesized. The molecular description and properties of the four complexes have been investigated by CHN, MS, UV-VIS, IR, PXRD, TEM, SQUID, SC-XRD, NLDFT, and electrical property characterizations. Single crystal X-ray structure determination of [Cu(bpy)(C2O4)]n (1) and [Cu(2-AMP)2(C2O4)]n (2) depicts their polynuclearity [bpy = 2,2’-bipyridine, 2-AMP = 2-aminopyridine; 2-AMP is a cleaved ligand of starting ligand L1 = N-(phenyl(pyridin-2-ylamino)methyl)pyridin-2-amine]. Both complexes have distorted octahedral geometry. Starting from another tripodal ligand L2 [L2 = 2-((((2-(pyridin-2-yl)ethyl)(pyridin-2-yl)-methyl)amino)methyl)phenol, L2’ (cleaved L2 ligand) = 2-(pyridin-2-yl)-N-((pyridin-2-yl)methyl)ethanamine], a mononuclear complex [Cu(L2)(Cl)] (3) has been obtained with a distorted square pyramidal geometry. Polynuclear complexes 1, 2, and 4 are CO2-mediated functional materials that have been produced in benzonitrile solvent medium. Interestingly, complex 4 of cleaved L2 ligand is a wonderful copper-based functional material with appreciable surface area. Powder XRD and TEM analysis of complex 4 supports its mesoporosity. Moreover, all four complexes can function as semiconductors over a wide temperature range.

Item Type: Article
Subjects: Materials
Depositing User: Dr. Sarita Ghosh
Date Deposited: 17 Feb 2016 09:39
Last Modified: 17 Feb 2016 09:39

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