Assembly of three coordination polymers from glycolate ligands: syntheses, crystal structures, and thermal properties

Abstract

Three transition metal-organic polymers, [Cu(η 2 -O2CCH2OH)(μ 2-O2CCH2OH)(H2O)] n (1), [Cu(μ 2-O2CCH2OH)2] n (2), and [Cd(μ 2-O2CCH2OH)2] n (3) constructed from the rigid glycolate (HO2CCH2OH) ligand have been isolated under hydro(solvo)thermal conditions and structurally characterized by single-crystal X-ray diffraction. Polymer 1 presents a one-dimensional zigzag chain, while polymer 2 has a two-dimensional sheet structure. Polymer 3 exhibits a similar sheet structure as 2; however, the coordination modes of the ligands in complexes 1 and 2 are different. The three-dimensional solid-state supramolecular structures of the three polymers involve intermolecular hydrogen bonds. The thermal properties of the polymers have also been investigated. Assembly of three coordination polymers from glycolate ligand: Syntheses, structures, and thermal properties. Three transition metal-organic polymers, [Cu(η 2 -COOCH2OH)(μ 2-COOCH2OH)(H2O)] n (1), [Cu(μ 2-COOCH2OH)2] n (2), and [Cd(μ 2-COOCH2OH)2] n (3) constructed by COOHCH2OH ligand have been successfully isolated under hydro(solvo)thermal conditions and structurally characterized by single-crystal X-ray diffraction. Their thermal properties have also been investigated.