Classical Racemization of Tetrahedral Tetracoordinate Centers via a Planar Transition State or an Intermediate Structure

We for the first time shown that transition between (R) and (S) stereoisomers via a planar transition state or an intermediate structure without having to break a bond is possible. Rigorous theoretical calculations have been used to study this novel phenomenon and to characterize the energetic, structure, dynamic and kinetic properties.