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The title complex, [Cu 2 Br 3 (C 11 H 9 N 2 O 2 )]  n  , was one of three isolated by slow evaporation of an acetonitrile reaction mixture of CuBr 2  with di-2-pyridyl ketone (1:1 molar ratio). The title complex contains a 2:1 metal-to-ligand ratio of copper(II) with the hydrated form of the ligand, di-2-pyridylmethane­diol. The two copper centers are bridged by a bromide ion and the alk­oxy O atom, and the Cu—Cu distance is 2.9801 (5) Å. The dimeric units are further linked by bromide ions, leading to a two-dimensional extended bridged structure. O—H⋯O hydrogen bonds are present in the crystal structure.

acta crystallographica section e structure reports online

catena-Poly[[μ-bromido-(μ-hydroxydi-2-pyridylmethanolato-κ4 N,O:O,N′)dicopper(II)(Cu—Cu)]-di-μ-bromido]