The rotational spectrum of CHF3 in the submillimeter-wave and far-infrared region: observation of the K=3 line splitting

Year: 1994

Authors: Cazzoli G., Cludi L., Cotti G., Dore L., Degli Esposti C., Bellini M., De Natale P.

Autors Affiliation: Dipartimento di Chimica G. Ciamician dell’Università di Bologna, Via Selmi 2, 40136 Bologna, Italy and European Laboratory for Nonlinear Spectroscopy (LENS) and Dipartimento di Fisica, Università di Firenze, Largo E. Fermi 2, 50125 Firenze, Italy

Abstract: The milimeter-wave, submillimeter-wave. and FIR spectra of the ground state of CHF3 have been observed and analyzed up to J = 78. The resulting spectroscopic constants are: B0/MHz = 10 348.8706(2), DJ/kHz= 11.34482(13), DJK/kHz = -18.11765(50), HJJJ/Hz= 0.020069(24), HJJK/Hz = -0.08598(10), HKKJ/Hz 0.11372(27), LJ/mHz = -0.669(16) × 10-4, LJJK/mHz = 0.4953(80) × 10-3, LJK/mHz = -0.1189(17) × 10-2, and LJKK/mHz = -0.1115(31) × 10-2. The splitting of the K = 3 ground state lines has been observed starting from the J = 29 ? 28 transition and the determined values of the splitting constants are h3/Hz = 0.29689(45) ×10-2 and dh3/Hz = -0.2054(52) × 10-7.

Journal/Review: JOURNAL OF MOLECULAR SPECTROSCOPY

Volume: 163 (2)      Pages from: 521  to: 528

KeyWords: trifluoromethan
DOI: 10.1006/jmsp.1994.1044

Citations: 17
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