Crystal structure and nontrivial magnetic properties of CuII binuclear complex based on 4-methyl-2,6-bis{[2-(4,6-dimethyl-pyrimidin-2-yl)hydrazono]methyl}phenol

The new complex [Cu 2 (H 2 L)Cl 3 ] with axial chloride ions coordination based on 4-methyl-2,6-bis{[2-(4,6-dimethyl-pyrimidin-2-yl)hydrazono]methyl}phenol was obtained and its crystal structure was determined. Magnetic studies revealed the presence of antiferromagnetic exchange interaction of −193 cm −1 that is extremely high for such type of complexes. The quantum chemical calculation of 2 J value has perfectly matched an experiment.