Acta Cryst. (2006). E62, m2005-m2007  [ doi:10.1107/S1600536806028935 ]

catena-Poly[tri--cyano-1,10-phenanthroline-²N,N'-tricopper(I)]

J.-T. Liu and S. W. Ng

Abstract: The crystal structure of the centrosymmetric title compound, fully described by the name catena-poly[[(1,10-phenanthroline-²N,N')cupriocyano]copper(I)]--cyano-[[(1,10-phenanthroline-²N,N')cupriocyano]copper(I)]--cyano-copper(I)--cyano-copper(II)--cyano], [Cu₃(CN)₃(C₁₂H₈N₂)]_n, consists of (Cu-CN-)_n polymeric chains in which two consecutive Cu atoms in every contiguous set of four each carry a pendant (phenanthroline)coppercyano unit. The Cu atoms with pendant groups are three-coordinate, as are the phenanthroline-chelated Cu atoms; the other independent Cu atom that comprises the backbone is two-coordinate. Two adjacent chains are linked by a CuCu interaction [2.941 (1) Å] into a ribbon. All cyano groups are disordered with no distinction between C and N atoms.

Online 2 August 2006

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