New μ-OAC bridged dinuclear copper(II) complex with tridentate Schiff base ligand: Synthesis, characterization, crystal structure, and CuO nano-particles formation

Abstract

A new (μ acetato) bridged dinuclear copper(II) complex [Cu 2 (L) 2 (μ OAc) 2 ] (I) has been synthe sized by the reaction of a tridentate N 2 O Schiff base ligand (HL) with Cu(OAC) 2 in methanol at refluxed con ditions and characterized by elemental analysis (CHN) and FT IR spectroscopy. The crystal structure of I was investigated by single crystal X ray diffraction (CIF file CCDC no. 1013907). X ray results showed that two OAC groups bridge the copper(II) ions in a Cu 2 O 2 core of a binuclear complex. Each copper(II) ion adopts a distorted square pyramidal geometry with one imine nitrogen, one amine nitrogen and one phenolato oxygen from the tridentate Schiff base ligand, completed by two acetate oxygen atoms. Finally, the complex was ther mally decomposed in order to obtain CuO nano particles. The particles were characterized by powder X ray dif fraction, which confirmed the formation of the CuO nano particles with the average size of 24 nm.

Cycloalkane Oxidation Catalyzed by Copper‐based Catalysts with H2O2 under Mild Conditions

“…For instance, Oshin and co‐workers reported that the bond length of Cu−Cl (2.27–2.28 Å) was shorter than that of Cu−O from ClO 4 − ion (2.78 Å) or CF 3 SO 3 − ion (2.53 Å) in analogous copper complexes [13b] . Also, it has been reported that the OAc − ion can serve as bridging ligand in copper complexes with relatively short bond length (1.94–1.96 Å) [13e,f,14] …”