▎ 摘　　要

NOVELTY - A graphene precursor compound is obtained by heat-melting a metallocene compound and a compound having dibenzothiophene structure, and performing ligand exchange. USE - Graphene precursor compound is used for manufacturing nanographene structure (both claimed) used in spintronics field. ADVANTAGE - The graphene precursor compound is efficiently and selectively manufactured. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of graphene precursor compound, which involves heat-melting metallocene compound and compound having dibenzothiophene structure, performing ligand exchange, and cooling; (2) nanographene structure formed by heating the graphene precursor compound at 800-1200 degrees C; and (3) manufacture of nanographene structure.