Structural Parameters and Internal Rotational Barriers of tert-Butylammonium Ion: AM1 and ab initio Calculations

Abstract

Semiempirical and ab initio MO calculations were performed to estimate the structural parameters of tert-butylammonium ion and its potential energies for the internal rotation of the CH3 and NH3 + groups. The barrier height for the rotation of NH3 + was found to be lower than for that of CH3 , corresponding to the C - N bond being longer than the C - C bond.