Poly[μ2-aqua-diaqua(μ8-3-nitrobenzene-1,2-dicarboxylato)(μ6-3-nitrobenzene-1,2-dicarboxylato)tetrasodium]

Abstract

In the title layered coordination polymer, [Na4(C8H3NO6)2(H2O)3]n, the doubly deprotonated 3-nitrobenzene-1,2-dicarboxylate ligands exhibit μ8- and μ6-coordination modes to the sodium ions, generating sheets lying parallel to (001). The coordination environments of the sodium ions are distorted octahedral, distorted trigonal-bipyramidal and moncapped trigonal-prismatic. One of the nitro groups is disordered over two sets of sites with site-occupancy factors 0.580 (8):0.419 (2). A network of O—H...O and O—H...N hydrogen bonds helps to establish the packing.