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The high resolution rotational spectrum of methyl chloride. The spin—rotation and nuclear magnetic shielding tensors

✍ Scribed by A. Dubrulle; D. Boucher; J. Burie; J. Demaison

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 363 KB
Volume: 45
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(77)80089-4

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✦ Synopsis

high resolution study of the rotational spectrum of CH3 35Cl in the vlbrstional ground state has been performed using a molecular beam spectrometer. By fitting the measured transitions to an appropriate molecular hamiltonian the vaIues of the following molecular parameters have been obtained: B = 13 292.8763 MHz;DJ = 18.089 kHz;DJK = 198.76 kHz;ff~~ = 9 HZ; eqQ = -74.750 MHz; Cl = -2.7 kHz and Cn = -7 kHz. These data are used to determine the pamagnetic COXtribution to the chlorine nuclear magnetic shielding tensor. The diamagnetic contribution is also calculated using a semiempirical method. Comparisons of the average shieldings are made for related molecules.

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