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

Chihiro Kachi-Terajima; Seiya Hagiwara

doi:10.1107/S2056989022003437

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

Acta Crystallogr E Crystallogr Commun. 2022 Apr 5;78(Pt 5):473-476. doi: 10.1107/S2056989022003437. eCollection 2022 May 1.

Authors

Chihiro Kachi-Terajima¹, Seiya Hagiwara¹

Affiliation

¹ Department of Chemistry, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.

Abstract

The reaction between copper(II) chloride dihydrate and the (E)-2-methyl-4-(quinolin-8-yldiazen-yl)benzene-1,3-diol ligand in aceto-nitrile 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 Cu^II ion. Individual mol-ecules of the Cu^II 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: copper(II) complex; crystal structure; electronic absorption spectra; quinoline-based azo ligand.