Journal of the American Chemical Society, Vol.120, No.20, 5122-5123, 1998
2-(4 ＇-nitrenophenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl : Photogeneration of a quartet state organic molecule with both localized and delocalized spins