[Zn2(H2O)3(2,2′-bipy)2(btc)][Zn(H2O)(2,2′-bipy)(btc)] ·8H2O: a novel zinc–carboxylate complex consisting of independently cationic and anionic chains

A novel zinc complex, [Zn2(H2O)3 (2,2′-bipy)2(btc)][Zn(H2O)(2, 2′-bipy)(btc)]·8H2O (1), (H3btc=1,3,5- benzenetricarboxylic acid, 2,2′-bipy=2,2′-bipyridine) has been prepared by hydrothermal reaction of H3btc, Zn(CH3CO2)2·2H2O and 2,2′-bipyridine at 180 °C and characterized by single-crystal X-ray diffraction analysis. Complex 1 consists of independently cationic and anionic chains. The hydrogen bonding interactions between chains extend 1 into a two-dimensional supramolecular architecture.