THE MOLECULAR-PARAMETERS OF THE ANTIMONY MONODEUTERIDE RADICAL FROM DIODE-LASER SPECTROSCOPY

Extensive measurements of the 3SIGMA ground state infrared spectrum of the antimony monodeuteride radical (SbD) have been carried out using a diode laser spectrometer. Transitions of the fundamental band of all three components of two isotopomers of SbD were measured with a nomin al accuracy of +/-0.001 cm-1. Only transitions of the O+ component of the v = 1 <-- 2 hotband were intense enough to be observed. The entire data set was fitted as a single 3SIGMA state and accurate molecular p arameters determined. The LMR data of Stackmann et al. [Mol. Phys. (in press)] on SbH provided invaluable aid with the assignment. Measureme nts were also carried out on two isotopomers of SbH in order to improv e the molecular parameters available for these species.