Acta Cryst. (2006). E62, m3217-m3219  [ doi:10.1107/S1600536806045296 ]

Tetrakis(-2-nitrobenzoato-²O:O')bis[aquacopper(II)] ethanol disolvate

J. Moncol, J. Kavalírová, T. Lis and D. Valigura

Abstract: The title complex, [Cu₂(C₇H₄NO₄)₄(H₂O)₂]·2C₂H₆O, forms a dimer of the paddle-wheel type located on a crystallographic inversion center. The two Cu²⁺ cations [CuCu = 2.6543 (10) Å] are connected by four 2-nitrobenzoate ligands. The apical positions of the square-pyramidal copper coordination polyhedra are occupied by the water O atoms. The two ethanol solvent molecules are linked to complex molecules via O-HO hydrogen bonds, which create one-dimensional chains of R₂³(13) and R₄⁴(12) rings. A - stacking interaction is observed between symmetry-related benzene rings of the 2-nitrobenzoate anions.

Online 8 November 2006

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