Kubo, Takashi Four-stage amphoteric redox properties and biradicaloid character of tetra-tert-butyldicyclopenta[b;d]thieno[1,2,3-cd;5,6,7-c'd']diphenalene. [electronic resource] - Angewandte Chemie (International ed. in English) Dec 2004 - 6474-9 p. digital Publication Type: Journal Article ISSN: 1433-7851 Standard No.: 10.1002/anie.200460565 doi