Rotational Spectrum of Vinylarsine.
The rotational spectrum of vinylarsine in the ground state has been studied in the range 7-320 GHz. The spectra of a syn conformer and a gauche conformer have been unambiguously assigned on the basis of the existence of a b-type or a c-type spectrum. Rotational constants, quartic, and some sextic centrifugal distortion constants were derived. For the syn form, measurements of low J aR0,1 transitions in a pulsed-nozzle Fourier transform microwave spectrometer (FTMWS) enabled the determination of the diagonal elements of the quadrupole tensor, as well as two spin-rotation constants. Ab initio calculations performed at the MP2 level using the 6-311++G(3df, 3pd) basis set reproduced experimental rotational constants within 0.2%. Copyright 1998 Academic Press.
Dréan
P
Centre d'Etudes et Recherches Lasers et Applications, Université des Sciences et Technologies de Lille, Bâtiment P5, Villeneuve d'Ascq Cedex, F-59655, France
Petitprez
D
Demaison
J
López
JC
Alonso
JL
Guillemin
JC
Boggs
JE