# Asterane

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{{Expand German|Asterane|date=March 2026}}
'''Asteranes''' are members of a series of cage [hydrocarbons](/source/hydrocarbons) consisting of two [cycloalkane](/source/cycloalkane) rings linked to each other by [methylene group](/source/methylene_group)s. Each linking face is thus a [cyclohexane](/source/cyclohexane), which has a [boat conformation](/source/boat_conformation).<ref>Henning Hopf, Classics in Hydrocarbon Chemistry, Wiley-VCH, New York, 2000, pages 34-37, {{ISBN|978-3-527-29606-4}}.</ref> They can be considered as homologues of the [prismanes](/source/prismanes), but with a carbon linker between the faces rather than direct bonding. The molecules having linear, triangular, and square bases, [2]asterane (also known as diasterane),<ref>{{cite journal |last1=Otterbach |first1=Andreas |last2=Musso |first2=Hans |title=Diasterane (Tricyclo[3.1.1.1<sup>2,4</sup>]octane) |journal=Angewandte Chemie International Edition in English |date=June 1987 |volume=26 |issue=6 |pages=554–555 |doi=10.1002/anie.198705541}}</ref> [3]asterane, and [4]asterane, have been synthesized and studied experimentally, and many higher members of the series have been studied using [computer models](/source/computational_chemistry). Modeling experiments predict that the highly symmetric geometry is no longer stable starting with [8]asterane.<ref>{{cite journal |title= Quantum-chemical investigation of structure and stability of [''n'']-prismanes and [''n'']-asteranes |first1= T. N. |last1= Gribanova |first2= R. M. |last2= Minyaev |first3= V. I. |last3= Minkin |journal= Russian Journal of Organic Chemistry |volume= 43 |issue= 8 |year= 2007 |pages= 1144–1150 |doi= 10.1134/S107042800708009X }}</ref>

==Structures==
[[Image:Asteranes.svg|thumb|center|upright=2.0|class=skin-invert-image|alt=[n]asteranes for n=2–7|1: Diasterane, 2: Triasterane, 3: Tetrasterane, 4: Pentasterane,<br/>5: Hexasterane, 6: Heptasterane]]

==References==
{{reflist}}

Category:Polycyclic nonaromatic hydrocarbons

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