Substituent effects in anilinium cations

To complete our study of a wide range of substituent types, we now discuss substituent effects in a positively charged group, NHs. Total and relative energies for a range of substituted anilinium ions are listed in Table 22. Interaction energies are included in Table 19 and Mulliken charges and overlap populations are shown in Table 23. 

The NHa substituent ean potentially act as a hyperconjugative donor or acceptor. However, the charge data for the parent anilinium ion (Table 2) show that X transfer between the NHs group and the ring is very small and that the NHs group is primarily a r acceptor. 

---