THE MOLECULAR-STRUCTURE OF 1,2,4-TRIFLUOROBENZENE AND OF THE 1,2,4-TRIFLUOROBENZENE-ARGON COMPLEX DETERMINED BY FT MICROWAVE SPECTROSCOPY

The rotational spectra of 1,2,4-trifluorobenzene, its six C-13 isotopi c species, and its argon Van der Waals complex were recorded using a m olecular beam FT microwave spectrometer. The C-13 r(s) coordinates of the monomer and the structure of the complex were derived, The argon a tom was found to be located 3.517 Angstrom above the ring plane. (C) 1 996 Academic Press, Inc.