Second order Stark shift of zero-field transitions in protonated and deuterated p-benzoquinones |
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| Authors: | S.J. Sheng M.A. El-Sayed H.P. Trommsdorff |
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| Affiliation: | Department of Chemistry, University of California, Los Angeles, California 90024, USA;Laboratoire de Spectrometrie Physique, CNRS, Université I Grenoble, 38041 Grenoble Cedex, France |
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| Abstract: | The second order Stark effect on the zero-field transitions of the lowest triplet state of p-benzoquinone (-h4 and -d4) in a host of p-dibromobenzene have been measured and compared. The electric field shifts of the microwave transitions of the perdeuterated compound are 1.9 ± 0.3 times larger than for the protonated molecule. This result indicates that the principal mechanism of the Stark effects is the mixing of the closeby inversion doublet components and not the mixing with a higher electronic state as assumed in previous work. |
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