Acta Cryst. (2009). E65, m1078-m1079  [ doi:10.1107/S1600536809031365 ]

Poly[(₂-4,4'-bipyridine)bis(₄-5-tert-butylisophthalato)bis(₃-5-tert-butylisophthalato)di-₃-hydroxido-pentazinc(II)]

D.-S. Zhou, D. Sun, S.-Y. Yang and R.-B. Huang

Abstract: The asymmetric unit of the title compound, [Zn₅(C₁₂H₁₂O₄)₄(OH)₂(C₁₀H₈N₂)]_n, consists of three Zn^II ions (one of which is located on a twofold rotation axis), two 5-tert-butylisophthalate ligands, one 4,4'-bipyridine ligand and one hydroxide group. The five Zn^II ions form a pentanuclear zinc cluster, which is further bridged by ten organic ligands, forming two-dimensional sheets. The central zinc ion of the cluster has site symmetry 2 and is octahedrally coordinated in a N₂O₄ donor set, whereas the other four zinc atoms are tetrahedrally coordinated by four O atoms. The coordination modes for the 5-tert-butylisophthalates are bis(bidentate) or bidentate-monodentate. Hydrogen bonds are formed between adjacent sheets through the hydroxide groups and the O atoms of the monodentate carboxylate groups. The two tert-butyl groups are disordered over two positions with ratios of 0.64 (2):0.36 (2) and 0.85 (3):0.15 (3).

Online 15 August 2009

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