A newly constructed Fourier transform microwave spectrometer has been used to record the pure rotational spectra of four isotopomers of SrS (88Sr32S, 87Sr32S, 86Sr32S, and 88Sr34S) between 6 and 26 GHz. The molecules were produced by reacting laser ablated strontium with carbonyl sulfide (0.1% in argon). Pure rotational transitions in the ground, first and second vibrational states have been observed. The data set has enabled a multi-isotopomer fit. Born-Oppenheimer breakdown terms for both atoms have been determined. The 87Sr nuclear quadrupole coupling constant in 87Sr32S has been determined for the first time.
Bibliographical noteFunding Information:
We thank Prof. Jens-Uwe Grabow at the University of Hannover for numerous conversations in connection with the construction of our spectrometer. We gratefully acknowledge financial support from the Petroleum Research Fund administered by the American Chemical Society (Type G), and two Faculty Research Grants from the University of North Texas.
- Laser ablation
- Rotational spectroscopy
- Strontium monosulfide