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The High-Frequency Rotational Spectrum of 1,1,1-Trichloroethane and the Observation ofK= 3 Splitting

✍ Scribed by G. Cazzoli; G. Cotti; L. Dore; Z. Kisiel

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
167 KB
Volume
174
Category
Article
ISSN
0022-2852

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✦ Synopsis

Measurements of the rotational spectrum of 1,1,1-trichloroethane, CH 3 CCl 3 , were made up to 678 GHz, JЉ Å 143, and K Å 75, and accurate values for sextic-level spectroscopic constants were determined. Lamb-dip millimeter-wave spectra and sideband FIR-laser spectra were used to observe the K Å 3 splitting characterized by the splitting constant h 3 Å 1.54(15) 1 10 011 MHz. The present determination and several other recent determinations of h 3 for axially substituted pyramidal molecules allow further empirical rules to be derived regarding the magnitude of h 3 splitting constants in symmetric top molecules.

πŸ“œ SIMILAR VOLUMES

The Millimeter- and Submillimeter-Wave R
The Millimeter- and Submillimeter-Wave Rotational Spectrum of CH3CF3: Observation of the K = 3 Splitting
✍ R. Bocquet; J. Burie; W.D. Chen; G. Wlodarczak; J. Demaison πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 309 KB

The ground state rotational spectrum of \(\mathrm{CH}_{3} \mathrm{CF}_{3}\) was measured from \(190 \mathrm{GHz}, J=18\), up to \(910 \mathrm{GHz}, J=87\) and \(K=63\). These measurements allow us to determine accurate molecular constants, including the three sextic centrifugal distortion constants:

The Rotational Spectrum of CHF3 in the S
The Rotational Spectrum of CHF3 in the Submillimeter-Wave and Far-Infrared Region: Observation of the K = 3 Line Splitting
✍ G. Cazzoli; L. Cludi; G. Cotti; L. Dore; C.D. Esposti; M. Bellini; P. Denatale πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 370 KB

The milimeter-wave, submillimeter-wave, and FIR spectra of the ground state of \(\mathrm{CHF}_{3}\) have been observed and analyzed up to \(J=78\). The resulting spectroscopic constants are: \(B_{0} / \mathrm{MHz}=\) \(10348.8706(2), D_{j} / \mathrm{kHz}=11.34482(13), D_{J K} / \mathrm{kHz}=-18.1176