Synthesis, molecular structure and DFT studies of tricarbonylrhenium(I) complexes containing nitrogen based bis, tris, tetrakis-(di-2-pyridylaminomethyl)benzene ligands

A series of mononuclear tricarbonylrhenium(I) complexes containing 2,2′-dipyridylamine ligands have been prepared by the reaction of rhenium starting precursor with various multidentate 2,2′-dipyridylamine ligands in presence of toluene and they were characterized by spectroscopic techniques.