Jahn-Teller effect vibronic interaction

I, B. Bersuker, The Jahn-Teller effect and Vibronic Interactions in Modern Chemistry, Plenum Press, New York, 1984. 

Now, we examine the effect of vibronic interactions on the two adiabatic potential energy surfaces of nonlinear molecules that belong to a degenerate electronic state, so-called static Jahn-Teller effect. 

R, Englman, The Jahn-Teller Effect in Molecules and Crystals, John Wiley. Sons, Inc., Interscience, New York, 1972 I, B. Bersucker and V. Z. Polinger, Vibronic Interactions in Molecules and Crystab, Springer Verlag, 1989. 

Bersuker IB (1984) The jahn-teller effect and vibronic interactions in modern chemistry. Plenum Press, New York... 

B. Bersuker. Jahn-Teller Effect and Vibronic Interactions in Chemistry. Nauka, Moscow, 1990. [in Russian]. 

There is good reason to believe that the pseudo Jahn-Teller effect commonly assumes an important role in a number of molecular processes including electronic relaxation. Large classes of heterocyclic molecules whose zero-order BO electronic states may be very close to one another are ideal candidates for these types of vibronic interaction.127 Should the lowest state 0X of a given multiplicity be strongly coupled to a nearby electronic state 02 the following spectral effects can be expected ... 

The presence of vibronic structure in the emission spectra of ions in solids does not depend on the nature of the particular ion alone, but also on the nature of its surroundings. In the case of ns2 ions the strength of the spin-orbit interaction relative to the Jahn-Teller effect determines whether the progression will be in v1 or v2. However, it is not usually possible to observe any vibronic structure at all due to deviations from high symmetry (pseudo Jahn-Teller effect in the ground state). Our present understanding is of a qualitative nature. Further progress is hampered by the fact that the presence of vibronic structure in the spectra is for these ions more exception that rule. 

Our brief review of Bersuker s academic life won t be complete, without mention to his excellent reviews and books on the Jahn-Teller effect and vibronic interactions in molecules and solids, on vibronic theory of ferroelectricity, on electron properties of coordination compounds, and on the electron-conformational approach to the problem of identification of biologically active units in a large set of molecules. However, the most important creation of Isaac Bersuker is his school, the world-known group of scholars that hold his system of views and follow his high... 

R. Englman and A. Yahalom, in Vibronic Interactions Jahn-Teller Effect in Crystals and Molecules (eds M. D. Kaplan and G. Zimmerman), NATO Science Series II, Kluwer, Dordreht, 2001, Vol. 39, p. 5. 

Vibronic Interactions and Jahn-Teller Effects in Charged Hydrocarbons... 

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