Poly[disodium [diaquatri-μ2-oxalato-dimagnesium(II)]]

Abstract

The title compound, {Na2[Mg2(C2O4)3(H2O)2]}n, is isotypic with its Co analogue. There are two crystallographically independent oxalate groups in the asymmetric unit, one lying on an inversion center and the other on a general position. Mg2+ ions are ligated by H2O molecules and bridged by tri- and tetradentate oxalate ligands, forming ladder-like double chains that are held together via O—H...O hydrogen bonds, with Na+ cations located between the chains to balance the charge.