Bondybey, Vladimir E. Bell Laboratories, Murray Hill, New Jersey.
Miller, Terry A. AT&T Bell Laboratories, Murray Hill, New Jersey.
- Splitting of electronic potential
- Splitting of vibronic levels
- Bent equilibrium configuration
- States of higher multiplicity
- Related Primary Literature
- Additional Reading
The splitting, into two, of the potential function along the bending coordinate in degenerate electronic states of linear triatomic or polyatomic molecules. Most of the areas and methods of molecular physics and spectroscopy assume the validity of the Born-Oppenheimer approximation. The nuclei generally move much more slowly than the electrons, the frequencies associated with electronic transitions are much higher than vibrational frequencies, and one can consider separately the three types of molecular motion: electronic, vibrational, and rotational. These statements are no longer necessarily valid for electronic states which are degenerate or at least close to degeneracy, and the Born-Oppenheimer approximation breaks down.
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