Acta Cryst. (2010). E66, m132-m133  [ doi:10.1107/S1600536810000401 ]

catena-Poly[[[aqua(5-nitrobenzene-1,2,3-tricarboxylato-O¹)copper(II)]-di--aqua-[diaquasodium]-di--aqua] tetrahydrate]

Y.-J. Ding and C.-X. Zhao

Abstract: In the heteronuclear coordination polymer, {[CuNa(C₉H₂NO₈)(H₂O)₇]·4H₂O}_n, the Cu^II atom is coordinated by six O atoms from five water molecules and one 5-nitrobenzene-1,2,3-tricarboxylate ligand in a slightly distorted octahedral geometry. The Na⁺ cation is surrounded by six water molecules in an irregular trigonal-prismatic geometry. The Cu and Na atoms are connected by water bridges, forming an infinite chain. O-HO hydrogen bonds involving the coordinated and uncoordinated water molecules connect the chains into a three-dimensional network.

Online 9 January 2010

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