molecules in which a ring encloses another, rod-like molecule having end groups too large to pass through the ring opening, and thus holds the rod-like molecule in position without covalent bonding, molekulid, mille tsükliline osa ümbritseb vardakujulist osa, mille otstes asetsevad rühmad on liiga mahukad, läbimaks tsükli avaust, mistõttu tsükkel hoiab kinni vardataolist osa ilma nende vahelise kovalentse sidemeta