P. F. BERNATH, Department of Chemistry, University of Waterloo, Waterloo, Ont., Canada N2L 3G1 and Department of Chemistry, University of York, Heslington, York, UK, YO10 5DD; R. S. RAM, Department of Chemistry, University of Arizona, Tucson, AZ 85721.
The emission spectrum of ReN has been reinvestigated in the visible region using a Fourier transform spectrometer. Two new bands have been located at 22110 and 22224 cm-1 and assigned as the 0+ - A1 and 0- - A1 transitions. From the rotational analysis of these bands it has been concluded that the current 0+ - A1 transition and the [24.7]0+ - X0+ transition observed previously by Balfour et al. [J. Mol. Spectrosc. 183, 113-118 (1997)] have an upper state in common. This assignment provides T00 = 2596 cm-1 for the A1 state. It is likely that the A1 and X0+ states are two components of the 3 - ground state.