MILLIMETER-WAVE FREE JET ABSORPTION-SPECTRUM OF SD METHYLTHIOGLYCOLATE - DESCRIPTION OF THE SH TORSION DOUBLE-MINIMUM POTENTIAL

Authors
MACCAFERRI G CAMINATI W FAVERO PG FANTONI AC
Citation
G. Maccaferri et al., MILLIMETER-WAVE FREE JET ABSORPTION-SPECTRUM OF SD METHYLTHIOGLYCOLATE - DESCRIPTION OF THE SH TORSION DOUBLE-MINIMUM POTENTIAL, Journal of molecular spectroscopy, 186(1), 1997, pp. 171-176
Citations number
17
Journal title
Journal of molecular spectroscopy → ACNP
ISSN journal
00222852
Volume
186
Issue
1
Year of publication
1997
Pages
171 - 176
Database
ISI
SICI code
0022-2852(1997)186:1<171:MFJAOS>2.0.ZU;2-U
Abstract
The free jet absorption millimeter-wave spectrum of methylthioglycolat e-SD has been investigated in the 60-78 GHz frequency range. The doubl e-minimum potential associated with the SD group torsion generates a v ibrational spacing Delta(01) = 8285(5) MHz between the O+ and O- state s of the A sublevel. This splitting, compared to the corresponding val ue 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 mo tion. (C) 1997 Academic Press.