THE MICROWAVE SPECTRUM OF DIFLUOROMETHANIMINE. $F_{2}CNH$
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Date
1988
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Publisher
Ohio State University
Abstract
The rotational spectrum of diflouromethanimine. $F_{2}CNH$, has been observed for the first time. In the region from 16 to 40 GHz 99 strong b-type transitions belonging to the branches bR*** and bQ***, and 4 weak a-type transitions belonging to the aQ*** branch have been assigned. Most of the observed rotational lines show the effects of the nuclear quadrupole interaction due to the ***N nucleus. All assigned 103 transitions could be fitted to Watson's Hamiltonian with A-reduction in the ***-axis representation. The preliminary spectroscopic constants are: $A - 11464.021 MHz. B = 11151.888 MHz. C = 5643.140 MHz. \Delta_{k}, = 5.25 kHz, \delta, - 0.184 kHz, \delta, = 9.555 kHz, 6, = 2.175 kHz$, and $k = 5.087 kHz$. These results confirm the assumption that F2CNH is a planar oblate asymmetric rotor molecule having C*** symmetry with asymmetry parameters $k= 0.8927$ and $b = -0.02756$, respectively. Further measurements in the millimeter wave region and the analysis of the nuclear quadrupole hyperfine structure of the individual rotational lines for F2CNH will be reported at the meeting.
Description
Author Institution: FB 9, Anorganische Chemie, Gesamthochschule Wuppertal; Physikalisch-Chemisches Institute, Justus Liebig Universit\""{a}t.