Department of Chemistry

 

Document Type

Article

Date of this Version

2016

Citation

White paper, issued June 22, 2016.

Comments

Copyright © 2016 Charles A. Kingsbury

Abstract

This work reports an investigation of ring closure processes in relation to the Hammond postulate. Calculations favor the importance of thermodynamics, not kinetics, as the basis for the Hammond postulate. A kinetically rapid, but thermodynamically unfavorable reaction is shown to resemble product. The ease of ring closure to three-membered rings, compared to four-membered rings, is thought to be associated with conformational mobility and perhaps vibrations coupled to the reaction coordinate motion in the case of four-membered rings.

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