Talk:Decalin

External links modified[edit]

Hello fellow Wikipedians,

I have just modified 2 external links on Decalin. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{Sourcecheck}}).

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 21:25, 9 December 2016 (UTC)[reply]

9–10 bond[edit]

The article talks about “a two-fold rotational symmetry axis going through the center of the 9–10 bond”, presumably referring to the numbering of the carbon chain. However, as the article Bicyclic molecule states, “bicyclic molecules have a strict nomenclature. [...] Numbering of the carbon chain always begins at one bridgehead atom (where the rings meet) [...]”. In this nomenclature, if I understand it correctly, the rotational symmetry axis therefore would go through the center of the 1–6 bond. Since this half sentence is somewhat trivial, anyway, - of course the axis goes through the center of the molecule - I will therefore remove it. ◄ Sebastian 09:49, 21 August 2019 (UTC)[reply]

cis-Decalin conformation[edit]

The ball-and-stick model of cis-decalin shows it in a double-boat conformation, which I highly doubt to be the ground state. Indeed it is very much possible for it to be in a double-chair conformation, which I highly suppose to be the lowest energy conformation. A quick check using MMFF94 force field gives a whopping energy difference of about 36kJ/mol. Any thoughts on that?

--NielsKarschin (talk) 14:18, 3 July 2020 (UTC)[reply]

Figures 5 and 6[edit]

Under trans-decalin, Figures 5 and 6 are referred to, but the article doesn't have Figures 5 and 6 ??? 99.167.202.76 (talk) 23:44, 21 July 2023 (UTC)[reply]

There's also a parenthetical reference to a bond shown in blue that does not appear anywhere in any figures. Was there some substantial deletion of content from this article at some point? Lumberjane Lilly (talk) 14:02, 22 December 2023 (UTC)[reply]

History[edit]

Who first made it? When was it first used? No history on it. Going to check my printed dictionary now. --Mark v1.0 (talk) 00:55, 4 April 2024 (UTC)[reply]