What is "tetracyclopropylmethane"

Tetracyclopropylmethane is an organic compound, a polycyclic hydrocarbon with formula CH, or (CH-)C. The carbon skeleton of its molecule consists of four cyclopropane rings attached to a central carbon atom.

This compound was synthesized in 2001 by Armin de Meijere and others, with dicyclopropyldiethenylmethane as an intermediate step. In the solid state, the molecules have a propeller shape with S4 symmetry.