Acta Cryst. (2005). E61, m994-m996  [ doi:10.1107/S1600536805011608 ]

catena-Poly[[bis(2-nitrobenzoato-O)copper(II)]di--3-pyridylmethanol-²N,O;²O:N]

P. Stachová, D. Valigura, M. Koman and T. Glowiak

Abstract: The crystal structure of the title compound, [Cu(C₇H₄NO₄)₂(C₆H₇NO)₂]_n, has been studied at 100 (2) K. The structure contains a linear polymeric chain of Cu^II atoms, which lie on centres of inversion and are doubly bridged by 3-pyridylmethanol molecules. Two coordination positions on each Cu centre are occupied by O atoms from 3-pyridylmethanol, with two other positions occupied by piridyl N atoms. Monodentate 2-nitrobenzoate anions bind to Cu in axial positions so that the copper(II) chromophore is trans-[CuO₂N₂O'₂]. The axially bound 2-nitrobenzoate anions form strong intramolecular O-HO hydrogen bonds with the OH groups of the 3-pyridylmethanol molecules. The resulting linear chains are held together by weak van der Waals interactions.

Online 30 April 2005

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