title: Millimeter-Wave Free Jet Absorption Spectrum of SD Methylthioglycolate: Description of the SH Torsion Double Minimum Potential
abstract: The free jet absorption millimeter-wave spectrum of methylthioglycolate-SD has been investigated in the 60-78 GHz frequency range. The double-minimum potential associated with the SD group torsion generates a vibrational spacing Delta01 = 8285(5) MHz between the O+ and O- states of the A sublevel. This splitting, compared to the corresponding value of 18 953 MHz for the normal species, suggests a large involvement of the sulfur atom in the motion. A model is given to describe this motion. Copyright 1997 Academic Press. Copyright 1997Academic Press
authors.affiliation: Dipartimento di Chimica "G. Ciamician,", Universita di Bologna, Via Selmi 2, Bologna, I-40126, Italy
authors.initials: G
authors.lastname: Maccaferri
authors.initials: W
authors.lastname: Caminati
authors.initials: PG
authors.lastname: Favero
authors.initials: AC
authors.lastname: Fantoni