Synthesis, crystal structure, and fluorescence property of rare earth complex [Er(H_2L)(HL)(H_2O)]_2 [Er(HL)(H _2O)_4(OH)] (H_2O)_3

摘要

A novel erbium (III) complex, [Er(H2L)(HL)(H2O)]2 [Er(HL)(H2O)4(OH)] (H2O)3, (H3L, being a aroylhydrazone ligand N-(2-propionic acid)-salicyloyl hydrazone) has been synthesized and the crystal structure has been determined by X-ray crystallography. The complex crystallizes in triclinic system, space group P-1 with unit cell parameters a = 7.735(3), b = 14.734(5), c = 17.957(7), = 101.984(6), = 97.990(6), = 90.420(6), V = 1981.1(12) 3 and Z = 2. Single-crystal X-ray diffraction results suggest that the ligands have two different coordination styles in the crystalline state. It crystallizes with two independent molecules in the complex. Each erbium(III) atom is eight-coordinate and has a distorted dodecahedron geometry. Fluorescence property of the complex has been tested with an excitation wavelength 300 nm at room temperature.