Acta Cryst. (2008). E64, m829-m830  [ doi:10.1107/S1600536808014268 ]

(Benzoato-²O,O')(quinoline-2-carboxylato-²N,O)(quinoline-2-carboxylic acid-²N,O)copper(II)

N. D. Martins, M. Ramos Silva, J. A. Silva, A. Matos Beja and A. J. F. N. Sobral

Abstract: The crystal structure of the title compound, [Cu(C₁₀H₆NO₂)(C₇H₅O₂)(C₁₀H₇NO₂)], contains copper(II) ions five-coordinated in a distorted trigonal-bipyramidal environment. The equatorial plane is occupied by three O atoms, one from the carboxylate group of the benzoate ion considered as occupying a single coordination site, the other two from two carboxylate groups of the quinaldic acid and quinaldate ligands. The axial positions are occupied by the N atoms of the quinoline ring system. The metal ion lies on a twofold axis that bisects the benzoate ion. The quinaldate and quinaldic acid ligands are equivalent by symmetry, and the carboxylate/carboxyl groups are disordered. The disordered H atom is shared between the carboxylate groups of adjacent quinaldic acid molecules. Such hydrogen bonds delineate zigzag chains that run along the c axis. The structure is very similar to that of the Mn^II analog.

Online 21 May 2008

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