4-[3-(l,2,4-triazolyl)-l,2,4-triazole complexes of four-coordinated Cu(II)and six-coordinated Fe(II)

摘要

Using a bitriazole ligand 4-[3-(l,2,4-triazolyl)-l,2,4-triazole](L),we isolated four-coordinated complex[Cu(L)_2(NCS)_2](H_2O)_2(1)and six-coordinated complex[Fe(L)_2(NCS)_2(H_2O)_2](H_2O)_2(2),which were characterized by X-ray single-crystal diffraction,elemental analysis,ESR and TGA.1,2,4-triazole and its derivatives are very interesting ligands because they combine the coordination geometry of both pyrazoles and imidazoles with regard to the arrangement of their three heteroatoms.Transition metal complexes of 1,2,4-triazole derivatives are intriguing from both theoretical and practical viewpoints and are the subject of several magnetic studies[1-6].