Transition metal complexes with Girard reagent-based ligands,Part I:Synthesis and crystal structure of the first cobalt(III)complexes with Schiff base derivative of Girard reagent

摘要

A new ligand,pyridoxilidene Girard-T hydrazone,[H_3L]C12 o 2H_2O,and its octahedral cobalt(III)complexes[Co(HL)(NO_2)3]o H_2O(1)and[Co(HL)_2](PF6)_3(2)were synthesized.The X-ray analysis of(1)showed that the complex has a mer-octahedral configuration formed by coordination of the tridentate ONO neutral Schiff-base molecule and three monodentate N-bonded NO_2 groups.Hydrogen bonds and intermolecular interactions for this complex are discussed.Complex(2)also has a wer-octahedral configuration.The ligand and complexes were characterized by elemental analysis,conductometric and magnetochemical measurements,IR and UV-Visible,~1H and ~(13)C NMR spectra.