Natural diamond, seen here, has a cubic packing structure. But a much rarer form of diamond has hexagonal packing and has now ...

Carbon allotropes, ranging from highly ordered structures such as graphene and nanotubes to more molecular forms such as fullerenes and cubane derivatives, exhibit a fascinating interplay between ...

Carbon is famous for its allotropes, including humble graphite, flashy diamond, and satisfyingly symmetrical buckminsterfullerene. But allotropes of nitrogen, carbon’s neighbor in the periodic ...