Electrochemical and Spectroscopic Characterization ofN,N′‐Dialkylquinoxalinium Redox SystemsThe outstanding position of the 1,4‐isomer, quinoxaline, among the diazanaphthalenes is confirmed by comparing LUMO energies from HMO perturbation calculations. Diquaternary salts [(R+)2(quin)](X−)2, R = Me, Et; quin = quinoxaline, 2,3‐ and 6,7‐dimethyl‐ and 2,3,6,7‐tetramethylquinoxaline, X−= BF4‐or SbCl6‐(4a – g), were isolated and characterized as compounds which are sensitive to reduction and hydrolysis. Cyclic voltammetry of the two‐step redox systems of the Weitz type showed two reversible one‐electron reductions with an extraordinarily stable radical cation intermediate (lgKc12). The redox potentials are less negative than those of the 4,4′‐bipyridinium systems but also less positive in comparison to the values ofN,N′‐dialkylphenazinium compounds. The radical cation intermediates which include a TCNQ−salt cannot only be characterized by ESR, but also by absorption spectroscopy in c