Ghoshal, D and Maji, T. K. and Lu, T. H. and Mallah, T and Mostafa, G and Ray Chaudhuri, N (2005) Synthesis of a metal-dicarboxylate hybrid with three dimensional Na-O-Cu connectivity: Structure, magnetic property and controlled solid state thermolysis leading to CuO nanorod. Inorg. Chim. Acta, 358 . pp. 1027-1033. ISSN 0020-1693
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A one-pot reaction of CuCl2 . 2H2O and malonic acid leads to a novel three dimensional inorganic-organic hybrid framework, [Na2Cu(mal)2(H2O)2]n, (1) (mal = malonate dianion). Single crystal X-ray structure of 1 reveals that it is a novel heterometallic three dimensional coordination-polymeric network which consists of interlocked anionic Cu-malonate and cationic Na-water-malonate sheets, where malonate dianion functions as an unprecedented heptadentate ligand. Low temperature magnetic study reveals that the compound is weak ferromagnetically coupled and this is supported by magneto-structural correlation. Thermogravimetric analyses are performed and it is observed that complex 1 upon heating finally transforms to CuO, which is evident by X-ray powder diffraction technique. Controlled solid state thermolysis of complex 1 at ∼850 °C for 24 h leads to the formation of CuO nanorods, which is confirmed by scanning electron microscopy and X-ray powder diffraction technique. The nanorods formed here have average diameters of ca. 40-200 nm and lengths up to 13 μm.
|Subjects:||Material Science > Functional and hybrid materials|
Material Science > Nanochemistry
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Chemistry|
|Deposited On:||02 Feb 2009 06:08|
|Last Modified:||18 Apr 2009 09:18|
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