Electronic Emission and Absorption Spectroscopy of the Rhenium Complexes Re(CO)3Cl(Phosphine)2

Article abstract of DOI:10.1007/BF00816407

The compounds Re(CO)3Cl(L)2, L = triphenylphosphine, tri-p-tolyphosphine, and Re(CO)3Cl(L'), L' = 1,2-bis(diethylphosphinoethane) are luminescent in solution and in crystalline form when excited between 351 nm and 514 nm at temperatures ranging from 10 K to room temperature.The absorption spectra contain a weak (E ca. 10 M^-1 cm^-1) band in the visible region of the spectrum between 400 and 500 nm.The lowest energy transition giving rise to these spectroscopic features is assigned to a d-d transition. - Keywords.Rhenium complexes; Electronic emission; Absorption.