Nelsen, Stephen F Pseudo-para-dinitro[2.2]paracyclophane radical anion, a mixed-valence system poised on the Class II/Class III borderline. [electronic resource] - Journal of the American Chemical Society Jan 2005 - 920-5 p. digital Publication Type: Journal Article ISSN: 0002-7863 Standard No.: 10.1021/ja0441920 doi