Poly[[tetra-μ ₃-acetato-hexa-μ ₂-acetato­diaqua-μ ₂-oxalato-tetra­lanthanum(III)] dihydrate]

Abstract

The title compound, {[La ₄(CH ₃CO ₂) ₁₀(C ₂O ₄)(H ₂O) ₂]·2H ₂O} _n , exhibits a two-dimensional layered structure with the oxalate and acetate ligands acting as bridges. The asymmetric unit contains two crystallographically independent lanthanum(III) ions, half of an oxalate ligand, five acetate ligands, one coordinated water mol­ecule and one uncoordinated water mol­ecule. The coordination numbers of the two La ions are 9 and 10. Adjacent layers of the structure, which extend parallel to (100), are linked by O–H⋯O hydrogen bonds and are also held together by van der Waals inter­actions between the CH ₃ groups of the acetate anions.