Chemistry of C84 : Separation of Three Constitutional Isomers and Optical Resolution of D2 -C84 by Using the "Bingel-Retro-Bingel" Strategy.

The pure enantiomers of D2 -C84 as well as a third constitutional isomer of this higher fullerene were produced by a retro-Bingel reaction on the first organic derivatives of C84 (see scheme). These derivatives were synthesized by Bingel cyclopropenation of C84 , separated, and unambiguously structurally characterized.