Triangulane

A triangulane is a hydrocarbon consisting exclusively of a series of spiro-linked cyclopropane rings.

[1] Triangulanes are named according to the rules of systematic nomenclature for spiro compounds.

[2] The pattern of their common names is "[n]triangulane", where n is the number of cyclopropane units.

The simplest such chemical, [2]triangulane, is named spiro[2.2]pentane by systematic nomenclature.

Chains consisting of four or more cyclopropane units—[4]triangulane and higher—can form chiral helices.