Poly[tris­(dimethyl­formamide)(μ₃-2,4,6-triiodobenzene-1,3,5-tricarboxyl­ato)samarium(III)]

In the title compound, [Sm(C₉I₃O₆)(C₃H₇NO)₃]_n, the Sm^III atom is coordinated by nine O atoms, viz. six carboxyl­ate O atoms from three 2,4,6-triiodobenzene-1,3,5-tricarboxyl­ate (I₃BTC) ligands and three O atoms from three N,N-dimethyl­formamide (DMF) mol­ecules. Each I₃BTC ligand bridges three Sm^III atoms, generating a three-dimensional metal-organic framework structure. The asymmetric unit contains one Sm^III ion and one I₃BTC anion, both situated on a threefold axis, and one DMF mol­ecule in a general position.