Syntheses, Crystal Structures and Fluorescence Properties of Two Complexes Based on a New Chiral Ligand

摘要

A new homochiral ligand,(R)-2-(4-pyridyl)-4,5-dihydrothiazole-4-carboxylic acid (HLR),has been synthesized.Two complexes,[ZnLR2(H2O)2]·H2O (1) and [MnLR2(H2O)2]·H2O (2) have been prepared by the reactions of Zn(Ⅱ) and Mn(Ⅱ) ions with the ligand HLR,and characterized by single-crystal X-ray diffraction analysis and fluorescence.Complexes 1 and 2 are isomorphs,and both of the Zn(Ⅱ) and Mn(Ⅱ) centers in 1 and 2 are six-coordinated by the two NO units of two ligands and two water oxygen atoms,showing distorted octahedral coordination geometry.Complexes 1 and 2 show fluorescent properties in the solid state at room temperature.