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Microwave Spectrum and Barrier to Internal Rotation inortho-Tolunitrile

✍ Scribed by A.I. Jaman; S. Maiti; R.N. Nandi

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 129 KB
Volume: 192
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1998.7676

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✦ Synopsis

The microwave rotational spectra of ortho-tolunitrile (C 6 H 4 CH 3 CN) have been investigated in the ground torsional state in the frequency ranges of 22.0 -26.0 GHz and 32.0 -37.0 GHz. The true rotational constants were determined to be A r ϭ 2890.98 MHz, B r ϭ 1499.75 MHz, and C r ϭ 993.58 MHz. A least-squares analysis of the A Ϫ E splittings of 16 transitions resulted in the values of V 3 ϭ 533.53 cal/mol and a ϭ 54.22Њ, assuming V 6 ϭ 0 and I ␣ ϭ 3.2 a.m.u. Å 2 .

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