Research Article: Poly[tetra­kis(μ4-4,6-dimethyl-5-nitro­benzene-1,3-dicarboxyl­ato-κ2O1:O1′:O3:O3′)bis­(pyridine-κN)dizinc]

Date Published: May 01, 2011

Publisher: International Union of Crystallography

Author(s): Qing-Yu Ma, Rui-Fang Guan, Guo-Zhong Li.


In the title complex, [Zn2(C10H7NO6)2(C5H5N)2]n, the repeat unit is a centrosymmetic tetra-carboxyl­ato-O,O’-bridged dimer in which each ZnII atom is five-coordinated by four O atoms from different dianionic 4,6-dimethyl-5-nitro­iso­phthalate ligands [Zn—O = 2.0283 (18)–2.0540 (19) Å] and one N atom from a pyridine mol­ecule [Zn—N = 2.030 (2) Å] in the axial site of a slightly distorted square-pyramidal coordination sphere. The Zn⋯Zn separation is 2.9750 (6) Å. The complex dimers are extended into a two-dimensional polymeric structure parallel to (100) through bridges provided by the second carboxyl­ate group of the ligand.

Partial Text

For the structure of a similar but discrete tetra-carboxyl­ato-bridged Zn2 dimer, see: Yu et al. (2011 ▶).




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