Poly[[[diaquabis(1,10-phenanthroline)samarium(III)]-tri-μ2-oxalato] tetrahydrate

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 SmIII 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 π–π stacking.