Jet-cooled rotational spectrum of laser-ablated 1,3,5-trithiane

The jet-cooled rotational spectra of the parent and three isotopic species ((CC2H6S3)-C-13, (C3H6SS2)-S-34 and (C3H6SS2)-S-33) 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 S-33 isotopomer in natural abundance. An analysis of the nuclear quadrupole hyperfine structure due to the S-33 nucleus allowed the determination of the quadrupole coupling tensor, giving some insight about the electronic distribution around this atom. (C) 2002 Elsevier Science B.V. All rights reserved.