Electric Dipole Moment of the 1A2 Electronic State of Formaldehyde
- 1 July 1966
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 45 (1), 52-57
- https://doi.org/10.1063/1.1727354
Abstract
The measurement of the Stark effect of the near‐ultraviolet absorption spectrum of formaldehyde vapor is described. The magnitude of the electric dipole moment of the 1A2 (nπ*) state is 1.56±0.07 D and its direction is the same as that of the ground‐state dipole moment. The decrease of dipole moment on excitation (0.78 D) is much smaller than predicted from a naive molecular orbital model, but is in good agreement with the value (0.66 D) corresponding to the previously calculated orbitals of Foster and Boys.Keywords
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