Acta Cryst. (2007). E63, m1031-m1033  [ doi:10.1107/S1600536807010586 ]

Poly[[[diaquabis(1,10-phenanthroline)samarium(III)]-tri-₂-oxalato] tetrahydrate]

F.-Y. Fang, X.-X. Guo and W.-D. Song

Abstract: The title complex, {[Sm₂(C₂O₄)₃(C₁₀H₈N₂)₂(H₂O)₂]·4H₂O}_n, is a coordination polymer containing oxalate and 1,10-phenanthroline ligands. Each of the two symmetry-independent Sm^III atoms is coordinated by six O atoms from three oxalate ligands, two N atoms from a 1,10-phenanthroline ligand and one coordinated water molecule, and the metal atoms display a distorted monocapped square-antiprismatic geometry. The compound forms heavily interconnected layers of oxalate-connected Sm-phenanthroline units. The voids between the individual metal complex units are filled with hydrogen-bonded interstitial water molecules, and within the layers the phenanthroline ligands are arranged in pairs by - stacking.

Online 14 March 2007

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