Circular
Circulen is a generic name for compounds in which a plurality of benzene rings are condensed (condensed) in a ring. Like Helicene, write the number of connected benzene ring units as circle, taking into account the number of connected benzene ring units. Until now, circulin (colunjulene), circulene (coronene), circle, circle (kekuren) have been synthesized. Circulen is a bowl shaped, circular and circular are the planar type, whereas Circular has a saddle type unique molecular structure. ...