Synthesis, Crystal Structure and Spectral Properties of a 2D Supramolecular Copper(II) Complex With 1-(4-{[(E)-3- ethoxyl-2-hydroxybenzylidene]amino}phenyl)ethanone Oxime

Abstract

A new mononuclear Cu(II) complex, [Cu(L)₂]·CH₃OH·H₂O, has been synthesized by the complexation of copper(II) acetate monohydrate with a new oxime-type ligand (HL = 1-(4-{[(E)-3-ethoxyl-2-hydroxybenzylidene]amino}phenyl)ethanone oxime) in methanol/acetone solution. The Cu(II) atom is four-coordinated by the phenolate O atoms and imine N atoms from two oxime-type ligands, in a distorted square-planar geometry. The O- and N-donor atoms are mutually cis and the dihedral angle between the two coordination plane (Cu1N2O2 and Cu1N4O5) is 48.06(3)°. In the crystal structure, each molecule links four other adjacent molecules into an infinite two-dimensional layer supramolecular structure through intermolecular O‒H···O hydrogen bonds.

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Keywords:

• crystal structure
• Cu(II) complex
• oxime-type ligand
• synthesis

Acknowledgments

This work was supported by the Foundation of Preparative Research of Jin-Chuan Corporation (No.209125-1104), which is gratefully acknowledged.