Synthesis, crystal structure and catalytic property of a copper(II) complex derived from N,N’-Bis(4-methylsalicylidene)cyclohexane-1,2-diamine

Abstract

A new mononuclear copper(II) complex was prepared from the tetradentate Schiff base ligand N,N’-bis(4-methylsalicylidene)cyclohexane-1,2-diamine (H₂L). The complex was characterized by elemental analysis, IR spectroscopy and X-ray structure determination. The complex crystallizes in the monoclinic space group P2₁/c with unit cell dimensions a = 13.439(1) Å, b = 13.671(1) Å, c = 10.5557(8) Å, β = 103.457(1)°, V = 1886.2(3) ų, Z = 4, R₁ = 0.0296, and wR₂ = 0.0812. Single crystal X-ray diffraction analysis reveals that the Cu atom is coordinated by two imino N and two phenolate O atoms of the Schiff base ligand, in a square planar coordination. Catalytic oxidation of the complex on some olefins was performed.

Keywords:

• Schiff base
• copper complex
• crystal structure
• catalytic property

Supplementary material

The crystallographic data for the complex has been deposited with the Cambridge Crystallographic Data Centre (CCDC 1448082). Copies of the data can be obtained free of charge on application to the Director, CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (e-mail for deposition: [email protected]).

Acknowledgment

This work was financially supported by K.C. Wong Magna Fund in Ningbo University, Ningbo natural science fund (project no. 201701HJ-B01019) and College students of science and technology innovation projects in Zhejiang province and Ningbo city (project no. 2017R405008 and 2017YZD001).