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- Annulene abstract "Annulenes are completely conjugated monocyclic hydrocarbons. They have the general formula CnHn (when n is an even number) or CnHn+1 (when n is an odd number). The IUPAC naming conventions are that annulenes with 7 or more carbon atoms are named as [n]annulene, where n is the number of carbon atoms in their ring, though sometimes the smaller annulenes are referred to using the same notation, and benzene is sometimes referred to simply as annulene.The first three annulenes are cyclobutadiene, benzene, and cyclooctatetraene ([8]annulene). Some annulenes, namely cyclobutadiene, cyclodecapentaene or [10]annulene, cyclododecahexaene or [12]annulene and cyclotetradecaheptaene ([14]annulene), are unstable, with cyclobutadiene extremely so.Annulenes may be aromatic (benzene, [14]annulene, cyclooctadecanonaene or [18] annulene), non-aromatic ([10]annulene), or anti-aromatic (cyclobutadiene, [12]annulene). Only cyclobutadiene and benzene are fully planar, though [14] and [18]annulene with all trans double bonds (placing the hydrogens inside the ring) can achieve the planar conformation needed for aromaticity, with [14] and [18]annulene following Hückel's rule with 4n+2 π electrons. [14]annulene does exhibit some ring strain due to steric hindrance.Many of the larger annulenes, [18]annulene for example, are large enough to minimize the van der Waals strain of internal hydrogens and thermodynamically qualify as aromatic. However, none of the larger annulenes are as stable as benzene, as their reactivity more closely resembles a conjugated polyene than an aromatic hydrocarbon.In annulynes, one double bond is replaced by an alkyne bond.".
- Annulene wikiPageExternalLink cbook.cgi?ID=C2040735&Units=SI.
- Annulene wikiPageExternalLink big.pdf.
- Annulene wikiPageID "843986".
- Annulene wikiPageLength "2995".
- Annulene wikiPageOutDegree "32".
- Annulene wikiPageRevisionID "701158965".
- Annulene wikiPageWikiLink Alkyne.
- Annulene wikiPageWikiLink Annulyne.
- Annulene wikiPageWikiLink Antiaromaticity.
- Annulene wikiPageWikiLink Aromaticity.
- Annulene wikiPageWikiLink Atom.
- Annulene wikiPageWikiLink Benzene.
- Annulene wikiPageWikiLink Carbon.
- Annulene wikiPageWikiLink Category:Annulenes.
- Annulene wikiPageWikiLink Category:Physical_organic_chemistry.
- Annulene wikiPageWikiLink Chemical_nomenclature.
- Annulene wikiPageWikiLink Circulene.
- Annulene wikiPageWikiLink Conjugated_system.
- Annulene wikiPageWikiLink Cyclic_compound.
- Annulene wikiPageWikiLink Cyclobutadiene.
- Annulene wikiPageWikiLink Cyclodecapentaene.
- Annulene wikiPageWikiLink Cyclododecahexaene.
- Annulene wikiPageWikiLink Cyclooctadecanonaene.
- Annulene wikiPageWikiLink Cyclooctatetraene.
- Annulene wikiPageWikiLink Cyclotetradecaheptaene.
- Annulene wikiPageWikiLink Fulvenes.
- Annulene wikiPageWikiLink Hxc3xbcckels_rule.
- Annulene wikiPageWikiLink Hydrocarbon.
- Annulene wikiPageWikiLink Pi_bond.
- Annulene wikiPageWikiLink Plane_(geometry).
- Annulene wikiPageWikiLink Ring_strain.
- Annulene wikiPageWikiLink Steric_effects.
- Annulene wikiPageWikiLinkText "Annulene".
- Annulene wikiPageWikiLinkText "[12]annulene".
- Annulene wikiPageWikiLinkText "annulene".
- Annulene wikiPageWikiLinkText "boracyclooctatetraene".
- Annulene wikiPageUsesTemplate Template:Annulenes.
- Annulene wikiPageUsesTemplate Template:Commons_category.
- Annulene wikiPageUsesTemplate Template:Reflist.
- Annulene subject Category:Annulenes.
- Annulene subject Category:Physical_organic_chemistry.
- Annulene type Cycloalkene.
- Annulene type Hydrocarbon.
- Annulene type Macrocycle.
- Annulene type Concept.
- Annulene comment "Annulenes are completely conjugated monocyclic hydrocarbons. They have the general formula CnHn (when n is an even number) or CnHn+1 (when n is an odd number).".
- Annulene label "Annulene".
- Annulene sameAs Q425083.
- Annulene sameAs أنولين.
- Annulene sameAs Anulè.
- Annulene sameAs Annulene.
- Annulene sameAs Anuleno.
- Annulene sameAs Annulène.
- Annulene sameAs Annuleni.
- Annulene sameAs アヌレン.
- Annulene sameAs 아눌렌.
- Annulene sameAs Annuleen.
- Annulene sameAs m.03gbsf.
- Annulene sameAs m.0vxfh10.
- Annulene sameAs Anulenă.
- Annulene sameAs Аннулены.
- Annulene sameAs Анулени.
- Annulene sameAs Q425083.
- Annulene sameAs 轮烯.
- Annulene wasDerivedFrom Annulene?oldid=701158965.
- Annulene isPrimaryTopicOf Annulene.