			15min:

QUASI-JAHN-TELLER EFFECT IN CHEMICAL REACTIONS.

LICHANG WANG, Department of Chemistry, The Ohio State University, Columbus, OH 43210.

It will be demonstrated that the quasi-Jahn-Teller effect in chemical reactions is a nuclear quantum effect, T^q, induced by electronic nonadiabaticity. Further, T^q is equivalent to the Diagonal Born-Oppenheimer Correction. Results including and without T^q for a model system will be presented. The research shows clearly that one has to consider this effect in order to obtain various quantities within a spectroscopic accuracy for systems where this effect is no longer negligible.