File:Decahydronaphthalene.svg

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English: Chemical structure of decahydronaphthalene, a.k.a. Decalin; carbons numbered according to different IUPAC numbering rules.

The blue numbers depict the IUPAC rules for numbering of fused polycyclic hydrocarbons. This nomenclature is preferred for polycylics consisting of at least two fused rings with a circumference of at least five atoms each (see here, p.90).

The grey numbers depict the numbering according to the von-Baeyer nomenclature for polycyclics. In principle, this nomenclature can also be applied to decahydronaphthalene, which would be called bicyclo[4.4.0]decane. In the case of decahydronaphthalene the blue numbering variant is preferred because decahydronaphthalene consists of two fused cycles with a circumference of 6 atoms each.
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Date/TimeThumbnailDimensionsUserComment
current20:20, 20 January 2019Thumbnail for version as of 20:20, 20 January 2019595 × 410 (3 KB)Hbf878 (talk | contribs)made IUPAC-preferred numbers blue
15:04, 14 January 2019Thumbnail for version as of 15:04, 14 January 2019595 × 410 (3 KB)Hbf878 (talk | contribs)smaller font size
14:51, 14 January 2019Thumbnail for version as of 14:51, 14 January 2019595 × 410 (3 KB)Hbf878 (talk | contribs)smaller numbers
14:41, 14 January 2019Thumbnail for version as of 14:41, 14 January 2019595 × 410 (5 KB)Hbf878 (talk | contribs)corrected numbering
15:48, 9 November 2018Thumbnail for version as of 15:48, 9 November 2018512 × 355 (5 KB)Hbf878 (talk | contribs)User created page with UploadWizard

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