Synthesis and crystal structure of a phenolato, chlorido and end-on azido-cobridged tetranuclear copper(II) complex derived from 2-[(2-dimethylaminoethylimino)methyl]-4-methylphenol

Abstract

A novel phenolato-, chlorido- and end-on azido-cobridged tetranuclear copper(II) complex, [Cu₄(daemp)₂Cl₂(μ-Cl)₂(μ _1,1-N₃)₂(MeOH)₂] (Hdaemp = 2-[(2-dimethylaminoethylimino)methyl]-4-methylphenol), was prepared and characterized by elemental analyses, IR and UV-Vis spectra, and single crystal X-ray diffraction study. The Schiff base ligands coordinate to the Cu atoms through phenolate O, imino N and amino N atoms. The adjacent Cu···Cu distances are 3.169(2) and 3.063(2) Å. Each Cu atom is in a square pyramidal coordination. The azido ligands link two Cu atoms with end-on bridging mode. There are two coordination modes for the Cl ligands, viz. terminal and bridging. In the crystal structure, the complex molecules are stack along the b axis.

Keywords:

• Schiff base
• copper(II) complex
• tetranuclear complex
• X-ray crystallography