An eight-connected metal organic framework based on Cu(5) clusters: Synthesis, structure, magnetic and catalytic properties

Sarma, Debajit and Natarajan, Srinivasan (2011) An eight-connected metal organic framework based on Cu(5) clusters: Synthesis, structure, magnetic and catalytic properties. In: Indian Journal of Chemistry - Section A: Inorganic, Physical, Theoretical and Analytical Chemistry, 50 (9-10, ). pp. 1281-1289.

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Abstract

A reaction of copper acetate, 5-nitroisophthalic acid in a water-methanol mixture under solvothermal condition results in a new metal-organic framework compound, [Cu(5)(mu(3)-OH)(2)(H(2)O)(6){(NO(2))-C(6)H(3)-(COO)(2)}(4)]center dot 5H(2)O, (1). The compound contains Cu5 pentameric cluster units connected by 5-nitro isophthalate (NIPA) moieties forming a CdCl(2)-like layer, which are further connected by another NIPA moiety forming the three-dimensional structure. The water molecules in (1) can be reversibly adsorbed. The removal of water accompanies a change in the colour as well as a structural re-organization. Magnetic studies suggest strong antiferromagnetie correlations between the Cu5 cluster units. The compound (1) exhibits heterogeneous Lewis acid catalysis for the cyanosilylation of imines with more than 95 % selectivity. Compound (1) has been characterized by IR, UV-vis, TGA, powder XRD studies.

Item Type:	Journal Article
Publication:	Indian Journal of Chemistry - Section A: Inorganic, Physical, Theoretical and Analytical Chemistry
Publisher:	National Institute of Science Communication and Information Resources
Additional Information:	Copyright of this article belongs to National Institute of Science Communication and Information Resources.
Keywords:	Coordination polymers;Metal organic framework;Pentameric clusters;Cyanosilylation;Polycarboxylates;Imines;Copper
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	20 Dec 2011 11:52
Last Modified:	20 Dec 2011 11:52
URI:	http://eprints.iisc.ac.in/id/eprint/42785

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