Abstract
Abstract Using a newly constructed source, tin monosulfide is produced by the reaction between carbonyl sulfide and the products resulting from the ablation of tin metal by the pulsed output of a frequency-doubled Nd:YAG laser ( λ = 532 nm). Entrained in argon carrier gas, SnS is introduced into the cavity of a Balle–Flygare Fourier transform microwave spectrometer that has a frequency range encompassing the two lowest rotational transitions ( J = 1 − 0 and 2 − 1) for this molecule. Except for 115 Sn 34 S, spectra are obtained in natural abundance for all 34 S-containing isotopologues with naturally occurring tin isotopes. Additionally, spectra were obtained for the rare isotopologues, 115 Sn 32 S and 120 Sn 33 S. Resolution of the hyperfine structure in the latter species allows a more precise determination of its 33 S nuclear quadrupole coupling constant. Spectra for all species containing 34 S are analyzed in terms of mass-independent Dunham parameters and are combined with all available isotopologues to determine Born–Oppenheimer breakdown terms for both tin and sulfur.
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