3d image of coronene skeletal formula

coronene superbenzene cyclobenzene circulene polycyclic aromatic hydrocarbon pah benzene ring solvent aromaticity clar sextets carpathite mineral sedimentary rock karpatite pendletonite great dying hydrocracking dicoronylene planar monoclinic graphene substance matter material compound component agent stuff reagent functional group precursor synthesis reaction production building block molecule molecular formula skeletal structural structure hemistry science scientific research organic chemical 3d