A novel copper(II) coordination polymer with 2,2 ';-bipyridyl-3,3 ';-dicarboxylic acid

作者:Zhao BZ*; Hao XR; Han ZG; Fu Q; Chen YG
来源:Acta Crystallographica Section C-Crystal Structure Communications, 2005, 61: M48-M50.
DOI:10.1107/S0108270104028720

摘要

A novel copper(II) coordination polymer, poly[[[ aquacopper( II)]-mu(3)-2,2';-bipyridyl- 3,3';-dicarboxylato-kappa(4) N, N';: O:O';] dihydrate], {[Cu(C12H6N2O4)(H2O)] . 2H(2)O}(n), was obtained by the reaction of CuCl2 . 2H(2)O and 2,2';-bipyridyl- 3,3';-dicarboxylic acid (H2L) in water. In the molecule, each Cu-II atom is five-coordinated and lies at the centre of a square-pyramidal basal plane, bridged by three L ligands to form a two-dimensional ( 4,4)-network. Each L moiety acts as a bridging tetradentate ligand, coordinating to three Cu-II atoms through its two aromatic N atoms and two O atoms of the two carboxyl groups. The two-dimensional square-grid sheets superimpose in an off-set fashion through the inorganic water layer.