ایسه‌آن

thumb|Iceane, colored by symmetry, Carbon in black and blue, hydrogen in white and cyan Iceane is a saturated polycyclic hydrocarbon with formula . It has a cage-like molecular structure, whose carbon skeleton can be viewed as three fused cyclohexane rings in the boat conformation; or as two such rings in the chair conformation, connected by three parallel axial bonds. The spatial arrangement of carbon atoms in iceane is the lonsdalite crystalline structure.