Hydrothermal synthesis and crystal structure of a new 2D metal-organic framework: [Gd(Oba)(Ox)0.5(H2O)2]n (H2Oba = 4,4′-oxybis(benzoic acid); H2Ox = oxalic acid)

A new coordination polymer [Gd(Oba)(Ox)0.5(H2O)2] n (I) (H2Oba = 4,4′-oxybis(benzoic acid), H2Ox = oxalic acid) has been synthesized by hydrothermal reactions and characterized by elemental analysis and single-crystal X-ray diffraction. In I, two Gd3+ ions are bridged by Oba ligands to form 1D ribbon chains, which are further connected by Ox ligands, generating a 2D layer structure.