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Low-temperature absorption and luminescence spectra of four organorhenium compounds were measured in the visible and near-infrared spectral regions. Effects of the temperature, formal oxidation state, and the 0x0-, bromo-, and organic ligands on the metal center are reported. The emission maxima of the four compounds show a large variation between 9000 and 14 200 cm-I. Stokes shifts show a smaller variation from 3700 to 4200 cm-I. Luminescence intensities are used to qualitatively characterize nonradiative relaxation processes.

1998 coordination chemistry, review coordination chemistry, review Z 0150 37 -315 Emitting State Energies and Vibronic Structure in the Luminescence Spectra of trans-Dioxorhenium(V) Complexes -[23 refs.]. -(SAVOIE, C.; REBER, C.; Coord. Chem. Rev. 171 (1998) 387-398; Dep. Chem., Univ. Montreal, Montreal, Que. H3C 3J7, Can.; EN)