✦ LIBER ✦

Microwave Spectrum, Quadrupole Coupling Constant Tensors, and Dipole Moments of 1-Chloro-3-Fluorobenzene

✍ Scribed by M. Onda; T. Odaka; H. Miyazaki; M. Mori; I. Yamaguchi; Y. Niide

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 254 KB
Volume: 165
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1994.1145

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✦ Synopsis

The microwave spectrum of 1 -chloro-3-fluorobenzene was reinvestigated in the frequency region (7-13 \mathrm{GHz}) by a molecular beam Fourier transform microwave spectrometer. A least-squares analysis of the observed (a) - and (b)-type transition frequencies gave rotational and quartic centrifugal distortion constants and the components of the nuclear quadrupole coupling tensor in the principal inertial axes system, (A=3425.57437(24) \mathrm{MHz}, B=1176.59907) (25) (\mathrm{MHz}, C=875.68123) (14) (\mathrm{MHz}, D_{J}=0.0314(30) \mathrm{kHz}, D_{J K}=0.0334(75) \mathrm{kHz}, D_{K}=0.726(30) \mathrm{kHz}, d_{1}=-0.00972(98)) (\mathrm{kHz}, d_{2}=-0.00225(52) \mathrm{kHz}, \chi_{a a}=-61.3242(33) \mathrm{MHz}, \chi_{b b}=28.1056(27) \mathrm{MHz}, \chi_{c c}=) (33.2186(60) \mathrm{MHz}, \chi_{a b}=32.989(25) \mathrm{MHz}), for (1-\left[{ }^{33} \mathrm{Cl}\right]) chloro-3-fluorobenzene. The dipole moments were found to be (\mu_{a} \leqslant 0.2) D and (\mu_{b}=1.464(2)) D. c 1994 Academic Press. Inc.

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