Agmon-Levine model

Similarly other models, such as the Marcus-Levine-Agmon [61] model, have been developed that predict the nonexistence of the inverted region. The latter model leads to the AG variations with AG° and A, in Eq. (84) ... 

In the same manner the models of Agmon-Levine (eqs(3) to (9)) and the Koeppl-Kresge (eq(34) with a square dependence of d on AG) [4c, 5a] are encompassed by ISM, but neglect the role of the resonance effect, i.e. ni>l/2. Nevertheless, we must point out that in the former model X has a different meaning X is equivalent to the intrinsic kinetic... 

Although this model was initially developed for reactions occurring in an adiabatic potential energy surface, it can be extended to weak interaction systems under the assumptions mentioned above, because the reaction path is obtained in terms of independent stretches of the two reactants. This contrasts with the Agmon-Levine approach, which is restricted to atom or group transfer reactions, where reactant and product are connected via a family of parallel curves each defined by the same positive bond order, maintained constant through the compensation between the decrease in the reactant bond order and the increase in the product one. One caution must be observed in our analysis the extensions x are not directly related to the intersection of the reactants curves, although it is convenient to represent them that way. Therefore, we can use the transition state expression to estimate the rates of ET reactions... 

ISM encompasses, as particular cases, several current models of chemical reactivity such as the theory of Marcus [18], the BEBO [4a], Agmon and Levine [5a], Koeppl and Kresge [ 19] models and two dimensional models such as the ones of Kreevoy and Lee [20] and of Grunwald [21]. It is also in general accord with qualitative electronic theories of chemical... 

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See also in sourсe #XX -- [ , ]

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