Two Cadmium(II) Coordination Polymers Based on 3,4-Methylenedioxyphenyl Imidazole Dicarboxylate: Syntheses, Characterizations and Properties

Abstract

Two one-dimensional cadmium(II) coordination polymers, [Cd(MDPhHIDC)(H 2 O) 2 ] n (1) (MDPhH 3 IDC D 2-(3,4-methylenedioxyphenyl)-1H-imidazole-4,5-dicarboxylic acid) and [Cd(MDPhHIDC)(2,2 0 -bipy)] n (2) (2,2 0 -bipy D 2,2 0 -bipyridine), have been hydrothermally synthesized, and structurally characterized by single-crystal X-ray diffraction, elemental analyses and IR spectra. In 1, the strong O-H¢¢¢O hydrogen bonding interactions contribute to the 3-D supramolecular structures. However, the weak C-H¢¢¢O hydrogen bonding and p-p stacking interactions supply the additional stability effect for the solid-state structure of polymer 2. Furthermore, the thermal and solid-state luminescent properties of the two polymers have been investigated as well.