catena-Poly[[zinc-bis(μ-2-sulfido-1H-benzimidazol-3-ium-5-carboxylato)-κ2O:S;κ2S:O] trihydrate]

Abstract

In the title compound, {[Zn(C8H5N2O2S)2]·3H2O}n, the ZnII atom, lying on a twofold rotation axis, is four-coordinated by two S atoms and two O atoms from four 2-sulfido-1H-benzimidazol-3-ium-5-carboxylate (H2mbidc) ligands in a distorted tetrahedral geometry. Two H2mbidc ligands bridge two ZnII atoms, generating a double-chain along [overline{1}01]. Adjacent chains are linked by N—H...O and O—H...O hydrogen bonds, forming a three-dimensional supramolecular network. One of the two water molecules also lies on a twofold rotation axis.