The molecular parameters of the antimony monodeuteride radical from diode laser spectroscopy

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Abstract
Extensive measurements of the 3Σ 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 nominal 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 3Σ state and accurate molecular parameters determined. The LMR data of Stackmann et al. [Mol. Phys. (in press)] on SbH provided invaluable aid with the assignment. Measurements were also carried out on two isotopomers of SbH in order to improve the molecular parameters available for these species.