摘要:
The compounds Re(CO)3Cl(L)2, L = triphenylphosphine, tri-p-tolyphosphine, and Re(CO)3-Cl(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 approximately 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.