Abstract:

The isomerization of singlet difluorosilacyclopropene has been studied by using ab initio method with 6-31G(d) basis set. The transition state with a 3-member cycle of this reaction has been obtained, and the intrinsic reaction coordinate (IRC) calculation has been performed. The barrier height is 421 .81 kJ•mol -1 (MP2/6-31G(d)/RHF/6-31G(d)) and the released energy is 52.75 kJ•mol- 1 (MP2/6-31G(d)/RHF/6-31G(d)). The relative structure data of the reactant, transition state and product have been given.

Key words: Difluorosilacyclopropene, Isomerization, Hydrogen migration, Photential propfile