Comparison of 1-hydroxymethyl-3,5-dimethylpyrazole and 1-benzyl-2-hydroxymethylimidazole coordination properties towards copper(II)

Using 1-hydroxymethyl-3,5-dimethylpyrazole as the starting ligand and 2-propanol as the solvent and a molar ratio Cu:L, 1:4, a dinuclear Cu(II) complex has been obtained. The microanalytical data and the crystal structure reveal that the dicopper complex with two bridging methoxide groups contains the 3,5DMePz, 1-CH2O-3,5DMePz and BF4− ligands which are received during the coordination process. The compound shows an antiferromagnetic intramolecular interaction between the Cu(II) ions.