Characterization of a mononuclear copper carboxylate complex: Bis(acetylsalicylato)bis(pyridine)copper(II) |
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Authors: | Frederick T. Greenaway Abbas Pezeshk A.Wallace Cordes Mark C. Noble John R.J. Sorenson |
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Affiliation: | Department of Chemistry, Clark University, Worcester, Mass. 01610, U.S.A.;Department of Chemistry, The University of Iowa, Iowa City, Iowa 52242, U.S.A.;Department of Chemistry, University of Arkansas, Fayetteville, Ark. 72701, U.S.A.;Department of Biopharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock., Ark. 72205, U.S.A. |
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Abstract: | The preparation, spectral properties, and crystal structure of a mononuclear copper(II) complex of acetylsalicylate and pyridine are reported. The complex exists as bis(acetylsalicylato)bis(pyridine)copper(II) both in the solid state and in chloroform solution. The crystal is monoclinic, space group P21/n, with a = 17.823(5), b = 10.903(4), c = 6.598(2) Å, β = 95.74(2)°. The final refinement used 1472 observed reflections and gave an R of 0.046. The copper atom is surrounded by four atoms in a trans square planar arrangement with two short CuO distances of 1.949(3) Å and two CuN distances of 2.003(4) Å. Two longer CuO distances of 2.623(3) Å are made with the remaining oxygen atoms of the aspirin carboxylate groups. |
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