Abstract: The ESR spectra of tetramethyl-, tetrabenzyl-, and unsymmetrical dibenzyldimethylhydrazine radical cation at various temperatures are reported. Second- order splittings were partially resolved for tetramethylhydrazine radical cation, and a (CH,) decreases as the temperature is raised. The value for AGl (-70') for CH2-N rotation in tetrabenzylhydrazine radical cation is 4.9 & 0.4 kcal/mol.
