Azide Addition to an Endohedral Metallofullerene: Formation of Azafulleroids of Sc3N@Ih-C80

The reaction of an organic azide with an endohedral metallofullerene has been investigated for the first time. Isomeric [5,6]- and [6,6]-azafulleroids can be obtained from the thermal reaction of Sc3N@Ih-C80 with 4-isopropoxyphenyl azide, while photoirradiation leads exclusively to the [6,6]-azafulleroid. An unprecedented thermal interconversion between the two isomeric azafulleroids has also been discovered.

本研究首次针对有机叠氮化物（organic azide）与内嵌金属富勒烯（endohedral metallofullerene）的反应开展了系统探究。通过Sc₃N@Ih-C₈₀与4-异丙氧基苯基叠氮的热反应，可获得异构体[5,6]-及[6,6]-氮杂富勒烯（azafulleroid）；而光辐照反应仅专一性生成[6,6]-氮杂富勒烯。此外，本研究还发现了两种异构体氮杂富勒烯之间前所未有的热互变过程。