Abstract: The present invention provides a nitrogen-containing carbonaceous material which has a new structure to supersede endohedral fullerenes and will find use in a broad range of applications, and a process capable of producing the same easily. The nitrogen-containing carbonaceous material comprises a plurality of spherical carbon molecules represented by Cn (where n denotes an integer which permits carbon atoms to form a geometrically spherical compound) and nitrogen atoms (or ions or radicals thereof) added to at least a portion of said spherical carbon molecules inside or outside. Also, the nitrogen-containing carbonaceous material comprises a plurality of spherical carbon molecules joined together through a nitrogen atom or its ion or radical.