At larger ring sizes there is little or no strain since there are many accessible conformations corresponding to a diamond lattice.

Ring strain can be considerably higher in bicyclic systems. For example, bicyclobutane, C₄H₆, is noted for being one of the most strained compounds that is isolatable on a large scale; its strain energy is estimated at 267 kJ mol⁻¹.

Synthesis reactions

Cycloalkanes,

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