title: Two equivalent methyl internal rotations in 2,5-dimethylthiophene investigated by microwave spectroscopy.
abstract: The microwave spectrum of 2,5-dimethylthiophene, a sulfur-containing five-membered ring with two conjugated double bonds, was recorded in the frequency range from 2 to 40 GHz using molecular beam Fourier transform technique. Highly accurate molecular parameters were determined. A labeling scheme for the group G36 written as the semi-direct product (C(I)(3) × C(I)(3)) ⋊ C(2v) was introduced.
authors.affiliation: Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52074 Aachen, Germany. vinh.van@rwth-aachen.de.
authors.forename: Vinh
authors.initials: V
authors.lastname: Van
authors.affiliation: Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52074 Aachen, Germany. vinh.van@rwth-aachen.de.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Stahl
authors.affiliation: Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR 7583 (CNRS/Univ. Paris Est & Paris Diderot), Université Paris Est, 61 avenue du Général de Gaulle, F-94010 Créteil cedex, France.
authors.forename: Ha Vinh Lam
authors.initials: HV
authors.lastname: Nguyen