catena-Poly[hexaaquamagnesium(II) [bis(μ3-5-nitro-2-oxidoisophthalato)dicopper(II)] dihydrate]

In the centrosymmetric dinuclear anions of the title bimetallic complex, {[Mg(H2O)6][Cu2(C8H2NO7)2]·2H2O}n, each CuII ion is strongly coordinated by four O atoms in a distorted square‐planar geometry. Two of these O atoms belong to phenolate groups and the other two to carboxylate groups from 5‐nitr...

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Bibliographic Details
Published in:Acta crystallographica. Section C, Crystal structure communications Crystal structure communications, 2011-04, Vol.67 (4), p.m105-m107
Main Authors: Li, Shi-Jie, Song, Wen-Dong, Miao, Dong-Liang, Ma, De-Yun
Format: Article
Language:English
Subjects:
Crystal structure
Crystallography
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Summary:In the centrosymmetric dinuclear anions of the title bimetallic complex, {[Mg(H2O)6][Cu2(C8H2NO7)2]·2H2O}n, each CuII ion is strongly coordinated by four O atoms in a distorted square‐planar geometry. Two of these O atoms belong to phenolate groups and the other two to carboxylate groups from 5‐nitro‐2‐oxidoisophthalate (L1) trianions, derived from 5‐nitrobenzene‐1,2,3‐tricarboxylic acid (O2N–H3L). The phenolate O atoms bridge the two CuII ions in the anion. In addition, each CuII cation interacts weakly with a symmetry‐related carboxylate O atom of an adjacent L1 ligand, giving a square‐pyramidal coordination geometry. The copper residue forms a ladder‐like linear coordination polymer via L1 ligands. The [Mg(H2O)6]2+ cations sit on centres of inversion. The polymeric anions, cations and free water molecules are self‐assembled into a three‐dimensional supramolecular network via O—H...O hydrogen bonds.
ISSN:0108-2701
1600-5759
DOI:10.1107/S0108270111008869