ABSTRACT
The period 1990-1995 represented the early years of metallofullerene studies. The abundance of endohedrals in soot was low. It was a time of poor synthetic yields and inefficient separation methods. It was challenging to perform seminal experiments with only micrograms of isolated samples. Naturally, research shifted to improving their abundance and yield. In the 2000s, great improvements were made to tune reactor conditions to selectively produce metallofullerenes. In this chapter, we discuss a variety of synthetic approaches, such as the influence of reactive gases, effect of solid additives, and manipulation of reactor conditions.
