Crystal Structures and Luminescent Properties of Three Coordination Polymers Based on 2,5-Furandicarboxylic Acid Ligand and 1,10-Phenanthroline

摘要

Three new coordination polymers,namely [Zn(FDA)(phen)(H2O)·H2O]n (1),[Cd(HFDA)(phen)2(NO3)] (2) and [Cd(FDA)(phen)]n (3) (H2FDA =2,5-furandicarboxylic acid,phen =1,10-phenanthroline) have been synthesized by the solvothermal method and characterized by elemental analysis,IR,powder X-ray diffraction,thermogravimetric analysis and X-ray single-crystal diffraction analysis.For 1,the neighboring Zn2+ ions are bridged by FDA2-as linkers to form one-dimensional (1D) chains,and phen ligands are as the terminal ligands.Furthermore,the 1D chains are packed into a three-dimensional (3D) supramolecular structure through hydrogen bonds and π-π interactions.For 2,the H2FDA ligand is partial deprotonation,which is a rare phenomenon among other coordination polymers based on H2FDA.Under the synergetic effect of phen ligands and the partial deprotonation of H2FDA,the structure of 2 is discrete.For 3,the Cd2+ ions are linked by two carboxylates of FDA2-ligand to give rise to 1D zig-zag chains,and phen ligands chelate the Cd2+ ions like 1.In addition,solid-state luminescent spectra of three coordination polymers were also studied at room temperature.