Acta Cryst. (2006). E62, m1725-m1727  [ doi:10.1107/S1600536806023683 ]

Poly[bis(guanidinium) [diaquabis(₃-hydrogencitrato)-₂-oxalato-dineodymium(III)] heptahydrate]

M. S. Grigoriev, C. Den Auwer, D. Meyer and P. Moisy

Abstract: The structure of the title compound, [C(NH₂)₃]₂[Nd₂(C₆H₅O₇)₂(C₂O₄)(H₂O)₂]·7H₂O, contains anionic layers in which every Nd atom is linked to three other Nd atoms by citrate anions and to one Nd atom by the centrosymmetric oxalate anion. The Nd atoms are ten-coordinated; their coordination polyhedra form pairs sharing one edge owing to bridging by O atoms of carboxylate groups of citrate anions.

Online 6 July 2006

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