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The Millimeter-Wave Spectrum of 2,3-Dihydrofuran

✍ Scribed by Juan C. López; Georges Wlodarczak; Jean Demaison

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
304 KB
Volume
180
Category
Article
ISSN
0022-2852

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✦ Synopsis

The millimeter-wave spectrum of 2,3-dihydrofuran in the ground and five ring-puckering excited states has been measured in the frequency range 100-250 GHz. The ground and first ring-puckering excited states have been fitted to a two-state Hamiltonian including Coriolis coupling interaction. The determined energy difference of 18.684(7) cm 01 between these states and the a and b type coupling parameters are consistent with the ring-puckering potential function and the previously observed dependence of the centrifugal distortion constants D JK , D K , and d K . A small ring-puckering dependence of the quartic centrifugal distortion constants D J and d J has been also observed. This dependence is well accounted for in terms of the ring-puckering potential function and the vibrational dependence of the rotational constants.

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