Vinylamine mode

Diazabishomofullerenes with another addition pattern can only be obtained in good yields if a tether directed synthesis is applied. If the tether between two azide groups is sufficiently rigid a second addition is forced to occur at specific regions of the fullerene cage [36, 37]. 

This characteristic structure type is completely different from those polyadducts of Cgfl described in Section 10.2.1. In many cases the detailed mechanisms of these polyadduct formations remain unclear however, presumably, sequential additions of radicals or nucleophiles such as the cuprate Ph2Cu are involved. It is very reasonable to assume that the subsequent addition of nucleophiles is accompanied 

The single-crystal structure of 31 clearly reflects the presence of an integral fulvene-type Jt-system on the spherical surface. The average bond length for the [5,6]-bond between C1-C2 and C3-C4 is 1.375 A, which is considerably shorter than a typical [5,6]-bond in CgQ. In contrast, the bond between C2 and C3 (1.488 A) is notably 

Upon reaction of Cjq with Meli a bis-epoxide bridged derivative of this cyclo-pentadiene adduct type has been isolated and characterized by single-crystal X-ray analysis [55]. Both epoxide groups bridge [5,6]-bonds in the same pentagon. 

---