1,2-Rearrangements of β-Nitrogen-Substituted (Porphyrinato)rhodium(III) Ethyls

(Porphyrinato)rhodium(III) ethyls containing β-nitrogen substituents have been showed to undergo clean, thermal 1,2-rearrangements into the α-nitrogen-substituted rhodium ethyls. The rates and the equilibrium positions were found to be dependent on the electronic nature of the N substituents. Complexes 1a−3a were characterized by X-ray crystallography.