Cyclooctadecanonaene or [18]annulene is an organic compound with chemical formula C 18H 18. It belongs to the class of highly conjugated compounds known...
8 KB (733 words) - 08:52, 27 June 2024
aromatic hydrocarbons are benzenoid. Notable counterexamples are cyclooctadecanonaene, azulene and trans-bicalicene. Quinoid Aromatic compound Tomlinson...
1 KB (128 words) - 18:36, 29 November 2023
and [14]annulene are weakly aromatic compounds and [18]annulene, Cyclooctadecanonaene, is aromatic, though strain within the structure causes a slight...
21 KB (2,098 words) - 10:35, 24 July 2024
Cyclododecahexaene ([12]annulene) Cyclotetradecaheptaene ([14]annulene) Cyclooctadecanonaene ([18]annulene) Cyclodocosahendecaene ([22]-annulene) Wikimedia Commons...
5 KB (538 words) - 18:31, 18 May 2023
copper(I)-alkyne complexes. This methodology was used in the synthesis of cyclooctadecanonaene. Another example is the synthesis of diphenylbutadiyne from phenylacetylene...
5 KB (587 words) - 15:31, 5 June 2024
(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...
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graphene lattice which can then be transferred onto another substrate. Cyclooctadecanonaene, the compound consisting of just the outer ring without the benzene...
9 KB (793 words) - 05:14, 19 April 2024
alkynes in the Glaser coupling (for example in the synthesis of cyclooctadecanonaene) or to aryl halides in the Castro-Stephens Coupling. Reductive coupling...
23 KB (2,441 words) - 02:00, 1 August 2024
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...
9 KB (1,050 words) - 04:36, 19 February 2024