76804-44-9Relevant articles and documents
Polycyclen vom Triangulen-Typ, II. Dreifach ortho-verbrueckte Triphenylmethan-Derivate
Hellwinkel, Dieter,Aulmich, Gerhard,Melan, Michael
, p. 86 - 108 (2007/10/02)
The syntheses of the new polycyclic systems 12,12c-dihydro-4,4,8,8,12,12-hexamethyl-4H,8H-dibenzopyrene (8), 11,11c-dihydro-7,7,11,11-tetramethyl-7H-naphthaceanthrylene (43), and 9,13b-dihydro-5,5,9,9-tetramethyl-1,13-ethano-5H-naphthanthracene (44) are reported.The spectroscopic data are in accordance with a pyramidal C3v-structure for 8, a similar Cs-structure for 43, and a flexible, helical C1-structure for 44.Furthermore, 8 can be transformed into its rapidly inverting pyramidal anion 11 and into its cation 9 which most probably is planar.