| Coupling in science |
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| Classical coupling |
| Quantum coupling |
Rovibronic coupling, also known asrotation/vibration-electron coupling, denotes the simultaneous interactions betweenrotational,vibrational, and electronic degrees of freedom in a molecule.[1] When a rovibronic transition occurs, the rotational, vibrational, and electronic states change simultaneously, unlike inrovibrational coupling. The coupling can be observed usingspectroscopy, and is most easily seen in theRenner–Teller effect in which a linear polyatomic molecule is in a degenerate electronic state and bending vibrations will cause a large rovibronic coupling.
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