Re(I)(tricarbonyl)+ complexes with the 2-(2-pyridyl)-N-methyl-benzimidazole, 2-(2-pyridyl)benzoxazole and 2-(2-pyridyl)benzothiazole ligands – syntheses, structures, electrochemical and spectroscopic studies

The reactions of Re(CO)5Cl with the chelating ligands 2-(2-pyridyl)-N -methylbenzimidazole, 2-(2-pyridyl)benzoxazole and 2-(2-pyridyl)benzothiazole afforded neutral fac -Re(CO)3(L)Cl and ionic View the MathML sourcefac-Re(CO)3(L)(acetonitrile)+PF6- complexes with structures confirmed by means of X-ray measurements. UV–vis absorption and emission properties have been studied at room and 77 K temperatures in order to determine the nature of the lowest electronically excited states. Electrochemical behaviour of the investigated fac -Re(CO)3(L)Cl and View the MathML sourcefac-Re(CO)3(L)(acetonitrile)+PF6- complexes has been studied using cyclic and square-wave voltammetry. Preliminary results from the electrogenerated chemiluminescence studies of the ionic View the MathML sourcefac-Re(CO)3(L)(acetonitrile)+PF6- and the neutral fac-Re(CO)3(MPBI)Cl complexes are briefly presented.