Asteranes are members of a series of cage hydrocarbons consisting of two cycloalkane rings linked to each other by methylene groups. Each linking face...

prismanes fuse to each other—have no hydrogen atoms attached to them. The asteranes contain a methylene group bridge on each edge between the two n-gon bases...

Auxetic Behavior in a Thermally and Chemically Stable sp3 Nanothread: Poly[5]asterane". Chemistry – A European Journal. 23 (52): 12917–12923. doi:10.1002/chem...