Cuneane () is a saturated hydrocarbon with the formula and a 3D structure resembling a wedge, hence the name. Cuneane may be produced from cubane by metal-ion-catalyzed ÃÂ-bond rearrangement. Similar reactions are known for () and bishomocubane ().
The carbon atoms in the cuneane molecule form a hexahedron with point group C<sub>2v</sub>. The cuneane molecule has three kinds of equivalent carbon atoms (A, B, C), which have also been confirmed by NMR. The molecular graph of the carbon skeleton of cuneane is a regular graph with non-equivalent groups of vertices, and so it is a very important test object for different algorithms of mathematical chemistry.
Some cuneane derivatives have liquid crystal properties.