Abstract
The jet-cooled rotational spectra of the parent and three isotopic species ( 13CC 2H 6S 3, C 3H 6 34SS 2 and C 3H 6 33SS 2) in natural abundance of 1,3,5-trithiane have been observed by laser ablation combined with molecular-beam Fourier transform microwave spectroscopy. The r 0 and r s structures of the molecule have been determined from the rotational data. The sensitivity of the experimental set-up proved to be high enough to observe the 33S isotopomer in natural abundance. An analysis of the nuclear quadrupole hyperfine structure due to the 33S nucleus allowed the determination of the quadrupole coupling tensor, giving some insight about the electronic distribution around this atom.
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