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A very rare hydrogen-bridged hexanuclear CuII complex containing a triangular Cu3O core capped by an unusual triply coordinated perchlorate anion

Maity, D., Mukherjee, P., Ghosh, A., Drew, M. G. B., Diaz, C. and Mukhopadhyay, G. (2010) A very rare hydrogen-bridged hexanuclear CuII complex containing a triangular Cu3O core capped by an unusual triply coordinated perchlorate anion. European Journal of Inorganic Chemistry, 2010 (5). pp. 807-813. ISSN 1434-1948

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To link to this article DOI: 10.1002/ejic.200900874

Abstract/Summary

An unusual hexanuclear Cu-II complex, [{[Cu(NHDEPO)](3)(mu(3)-O)(O3ClO)}(2)(mu-H)]center dot 7ClO(4)center dot 4H(2)O (1) was prepared starting from Cu(ClO4)(2)center dot 6H(2)O and the oxime-based Schiff base ligand NHDEPO (= 3-[3-(diethylamino)propylimino]butan-2-one oxime). Structural characterization of the complex reveals that it consists of two triangular Cu3O units, the copper ions being at the corners of an equilateral triangle, separated by an O center dot center dot center dot O distance of 2,447(5) angstrom, held together solely by a proton. In each triangle, the copper atoms are in square-pyramid environments. The equatorial plane consists of the bridging oxygen of the central OH-(O2-) group together with three atoms (N, N, O) of the Schiff base. All Unusual triply coordinated perchlorate ion (mu(3)-kappa O:kappa O':kappa O '') interacts in axial position with the three copper ions, Variable-temperature (2-300 K) magnetic susceptibility measurements show that complex 1 is antiferromagnetically Coupled (J = -148 cm(1-)). The EPR data at low temperature clearly indicates the presence of spin frustration phenomenon in the complex.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:19554
Publisher:Wiley-Blackwell

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