Pulsed-beam Fourier transform microwave spectroscopy was used to observe and assign the rotational spectra of the argonketene van der Waals complex. Tunneling of the hydrogen or deuterium atoms splits the a-and b-type rotational transitions of H 2 CCO-Ar, H 2 13 CCO-Ar, H 2 C 13 CO-Ar, and D 2 CCO-A
The Electric Dipole Moment of the CO2–CO van der Waals Complex
✍ Scribed by J.S. Muenter; Ratan Bhattacharjee
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 88 KB
- Volume
- 190
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
Radiofrequency transitions within K = 2 asymmetry doublets have been observed for the CO2-CO van der Waals complex. A Stark effect measurement on the J = 2, K = 2 transition provides an electric dipole moment of µ = 0.2493(1) D. Combining this result with the permanent moment of CO, µCO = 0.1098 D, gives a change of moment on complex formation of Deltaµ = 0.140 D. The sign of Deltaµ is such that the CO end of the complex is more positive than CO2. The origin of Deltaµ should not be attributed to any single mechanism, and several different contributions to Deltaµ are discussed. Copyright 1998 Academic Press.
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