In this same vein, although currently out of the scope of a teaching laboratory, is the recent synthesis of perfluorocubane . This fluoridation of a cube-shaped hydrocarbon, consistent with theoretical predictions , results in an unpaired electron being located predominantly in the cage. A physical manifestation of a three dimensional 'particle-in-a-box', perflourocubane was voted a 'molecule of the year' for 2022 by the editors of Chemical and Engineering News 25 .