Synthesis, crystal structure and photophysical properties of chlorido[(E)-3-hydroxy-2-methyl-6-(quinolin-8-yldiazenyl)phenolato]copper(II) monohydrate

Abstract

The reaction between copper(II) chloride dihydrate and the (E)-2-methyl-4-(quinolin-8-yldiazenyl)benzene-1,3-diol ligand in acetonitrile leads to the formation of the title compound, [Cu(C16H12N3O2)Cl]·H2O. The ligand is deprotonated and coordinates with three donor atoms (tridentate) to the CuII ion. Individual molecules of the CuII complex are connected by chloride bridges, forming a one-dimensional coordination polymer. No photoisomerization to the cis isomer of the azo ligand was observed upon irradiation with UV light.

Keywords

• crystal structure
• copper(ii) complex
• quinoline-based azo ligand
• electronic absorption spectra