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- MO's Models of Chemical Reaction and Indication of Two TSs Case
- The Electronic Structure's Precondition for the Two Different TSs for the One Elementary Reaction
- Chemical Reactions with Two Different Paths between Reactant and Product
- Chemical Reaction with Two Equivalent (Isomeric) TSs between Reactant and Product
- Two Different Reaction Routes between Reactant and Product: Two Different Resonance Schemes
- Singularity of the Chemical Reaction with Two TSs
The phenomenon of the elementary chemical reaction with two different transition states (TSs) between reactant and product is represented. Different examples of the reaction with two transition states were reported during the last decade. In some cases, one route is dominant, in another cases the energy of the barriers is similar, but the electronic structure of TSs are different. The Valence Bond (VB) approach provides the rationalization for the phenomenon of the chemical reaction with two TSs: the reactant and product pair is based on three dominant VB structures (anchors). The VB approach provides an opportunity to distinguish between different resonance mechanisms – different TSs. The 2D-domain is based on two minima, the reactant and the product, which are connected by two different TSs and can include the electronic degeneracy. Physical consequences of the chemical reaction with dual reaction routes are discussed. © 2014 Wiley Periodicals, Inc.