Paramagnetic Resonance Absorption of Carbazyl and Hydrazyl

Abstract

The paramagnetic resonance spectra of single crystals of carbazyl and hydrazyl show distinct anisotropies, which appear to be associated with the microscopic magnetic susceptibility within the molecule in the vicinity of the unpaired electron. This leads to an asymmetry in the absorption line of a polycrystalline specimen. The hyperfine structures of the two radicals in a benzene solution show that in carbazyl the two N atoms are nonequivalent in that the odd electron spends approximately twice as long in the vicinity of one, compared to the other.