Preferred Label : Renner–Teller effect;
IUPAC definition : Molecular distortion in linear molecular species with degenerate electronic states
(e.g. belonging to the C v group). The Renner–Teller effect is a particular case of
the Jahn–Teller effect. From the point of view of the em potential energy surfaces
/em the Renner–Teller effect generates a surface touching (see scheme below).;
Scope note : for linear molecular entities it is the only possible vibronic effect characteristic
of degenerate electronic states.; the renner–teller effect arises from splittings in the vibrational levels of molecular
entities due to even terms in the vibronic perturbation expansion. this is generally
a minor effect for non-linear molecular entities compared to the jahn–teller effect,
which is due to the odd terms.;
Origin ID : R05290;
See also
Molecular distortion in linear molecular species with degenerate electronic states
(e.g. belonging to the C v group). The Renner–Teller effect is a particular case of
the Jahn–Teller effect. From the point of view of the em potential energy surfaces
/em the Renner–Teller effect generates a surface touching (see scheme below).
