Synthesis,structure and fluorescence of a novel 1D chain Zn coordination compound

A novel 1D chain compound with the formula Zn(H2edc)(H2O)3DMFn (1) has been synthesized by solvothermal method of the Zn(NO3)26H2O and 5,5-(ethane-1,2-diyl-bis(oxy)diisophthalic acid (H4edc).The compound has been characterized by single-crystal X-ray diffraction,elemental analyses,Fourier transform infrared (FT-IR) spectra and powder X-ray diffraction (PXRD),and the fluorescence of compound 1 was studied.Compound 1 belongs to triclinic P-1 space group,and the cell parameters a=0.71860(5)nm,b=1.25315(14)nm,c=1.29363(12)nm,=78.223(9),=88.372(7),and =87.521(8).The structure of compound 1 is a 1D chain which is formed by mononuclear Zn ion linked by H4edc ligands,and forming a 3D supermolecular structure by hydrogen bonds.Fluorescence research shows that the emission spectrum of compound 1 occurs large red shift compared with H4edc ligand,owing to the ligand-to-metal Zn2+ charge transfer.