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A one‐dimensional heterometallic coordination polymer with a three‐dimensional supramolecular framework: poly[μ2‐aqua‐diaqua(2,2′‐bipyridyl)(μ5‐2‐sulfonatobutanedioato)copper(II)sodium(I)]

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The title compound, [CuNa(C4H3O7S)(C10H8N2)(H2O)3] n , consists of one CuII cation, one NaI cation, one 2‐sulfonatobutanedioate trianion (SSC3−), one 2,2′‐bipyridyl (bpy) ligand and three coordinated water molecules as the building unit. The coordination of the CuII cation is composed of two pyridyl N atoms, one water O atom and two carboxylate O atoms in a distorted square‐pyramidal coordination geometry with an axial elongation. The NaI cation is six‐coordinated by three water molecules and three carboxylate O atoms from three SSC3− ligands in a distorted octahedral geometry. Two SSC3− ligands link two CuII cations to form a Cu2(SSC)2(bpy)2 macrocyclic unit lying across an inversion centre, which is further linked by NaI cations via Na—O bonds to give a one‐dimensional chain. Interchain hydrogen bonds link these chains to form a two‐dimensional layer, which is further extended into a three‐dimensional supramolecular framework through π–π stacking interactions. The thermal stability of the title compound has also been investigated.

Document Type: Research Article

DOI: http://dx.doi.org/10.1107/S0108270112030909

Affiliations: College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China

Publication date: August 15, 2012

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