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Bowman's adiabatic rotation approximation is employed to describe reactive systems that have symmetric-top geometries during the entire collision progress. The results are compared with the approach of shifting the total energy by a characteristic rotational energy.

A series of gas-phase nucleophilic substitution reactions at sulfur of methanesulfinyl derivatives by small anions is examined by Hartree-Fock, MP2, and DFT computations. In most cases, substitution is found to follow an addition-elimination mechanism, resulting in a triple-well potential energy surface with small barriers of activation on either side of the central, tetracoordinate-sulfur minimum.

The reaction cross-sections and the speed of product distribution are specified for the bimolecular gas phase nucleophilic substitution (SN2) reaction as a function of collided force. The outcome indicates that the exothermic SN2 reaction is not sufficient in comparison to the phasespace theory along with the ion dipole capture models.

A new method for the kinetic resolution of alpha-trifluoroacetamido N-acyl oxazolidinethiones using a readily prepared catalyst was described. The synthesis of acyclic amino acids, was an excellent method, which allows for preparation of materials in high enantiomeric excess.