a = 1.4984 (5) nm, b = 0.4802(2) nm, c = 1.0260(3) nm
α = 90°, β = 111.52(1)°, γ = 90°
Formula units (Z)
2
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Chemical compound
Cyclooctadecanonaene or [18]annulene is an organic compound with chemical formula C 18H 18. It belongs to the class of highly conjugated compounds known as annulenes and is aromatic. The usual isomer that [18]annulene refers to is the most stable one, containing six interior hydrogens and twelve exterior ones, with the nine formal double bonds in the cis,trans,trans,cis,trans,trans,cis,trans,trans configuration. It is reported to be a red-brown crystalline solid.
^ abGorter, S.; Rutten-Keulemans, E.; Krever, M.; Romers, C.; Cruickshank, D. W. J. (1995). "[18]-Annulene, C18H18, structure, disorder and Hückel's 4 n + 2 rule". Acta Crystallographica Section B Structural Science. 51 (6): 1036–1045. Bibcode:1995AcCrB..51.1036G. doi:10.1107/S0108768195004927.
and 9 Related for: Cyclooctadecanonaene information
Cyclooctadecanonaene or [18]annulene is an organic compound with chemical formula C 18H 18. It belongs to the class of highly conjugated compounds known...
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and [14]annulene are weakly aromatic compounds and [18]annulene, Cyclooctadecanonaene, is aromatic, though strain within the structure causes a slight...
(molar mass: 234.33 g/mol, exact mass: 234.1409 u) may refer to: Cyclooctadecanonaene, or [18]annulene Retene This set index page lists chemical structure...
copper(I)-alkyne complexes. This methodology was used in the synthesis of cyclooctadecanonaene. Another example is the synthesis of diphenylbutadiyne from phenylacetylene...
graphene lattice which can then be transferred onto another substrate. Cyclooctadecanonaene, the compound consisting of just the outer ring without the benzene...
fields are in opposite direction. This effect can be observed in cyclooctadecanonaene ([18]annulene) with 6 inner protons at −3 ppm. The situation is reversed...
alkynes in the Glaser coupling (for example in the synthesis of cyclooctadecanonaene) or to aryl halides in the Castro-Stephens Coupling. Reductive coupling...
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