Tricarbonyl rhenium complex of 2,6-bis(8′-quinolinyl)pyridine: Synthesis, spectroscopic characterization, X-ray structure and DFT calculations
摘要:
2,6-Bis(8'-quinolinyl)pyridine (bqp) reacts with pentacarbonyl rhenium chloride in toluene to give fac, fac-[Re(bqp-kappa N-3)(CO)(3)](Cl). X-ray crystallographic data on fac,fac-[Re(bqp-kappa N-3)(CO)(3)](Cl) show that the bqp ligand and carbonyl ligands achieve a mutually facial arrangement. A mix of MLCT and pi-pi* ligand centered transitions is observed for the low energy UV-vis absorption bands. The complex is emissive in solution and appears to be dominated by a MLCT-based process. Electronic and structural characteristics are supported by DFT calculations. (C) 2013 Elsevier B.V. All rights reserved.