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Diaquabis(2,2′-biimidazole)zinc(II) 4,4′-dicarboxybiphenyl-3,3′-dicarboxylate

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Author(s): Jie Kang | Chang-Cang Huang | Zhi-Qing Jiang | Sheng Huang | Shuang-Lu Huang

Journal: Acta Crystallographica Section E
ISSN 1600-5368

Volume: 65;
Issue: 4;
Start page: m452;
Date: 2009;
Original page

ABSTRACT
In the title compound, [Zn(C6H6N4)2(H2O)2](C16H8O8), the ZnII atom, located on an inversion centre, is coordinated by two aqua and two bidentate biimidizole ligands, resulting in a slightly distorted octahedral ZnO2N4 geometry. The four N atoms from the two biimidizole ligands lie in the equatorial plane and the two aqua O atoms lie in the axial sites. The biphenyltetracarboxylate anion also lies on an inversion centre. The ZnII complex cation and the anion are held together by N—H...O hydrogen bonds, forming a zigzag chain along [2overline{1}1]. The chains are further connected by water molecules via O—H...O hydrogen bonds.

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