Talk:Benzene
|
|
Perhaps all the discussion of aromaticity and delocalisation should be moved to aromatic? Iridium77 16:17, 21 Feb 2004 (UTC)
External Yale links
I've removed these two external links
- Couper and Carbon bonds (http://classes.yale.edu/chem125a/125/history99/5Valence/Couper/Couper.html)
- Kekule, Couper and dreams of Benzene (http://classes.yale.edu/chem125a/125/history99/5Valence/Kekule/Kekule.html)
because they appear to be blocked to people outside of Yale University. Someone who can see the Yale pages, may want to summarise them, or link to some equivalent pages elsewhere.
Main image
I notice the main image, Image:Benzene structure.png, contains two representations showing the outdated and incorrect Kekulé structure (ie. those with double bonds). Benzene contains no double bonds (which have a bondlength of 0.13 nm) and is not totally single bond (0.15 nm)but has delocalised electrons inducing a bond length of 0.14 nm. --Oldak Quill 18:57, 14 Apr 2005 (UTC)
Good point. But what you call "outdated and incorrect Kekulé structur" is just the most common way to draw benzene rings and other aromatics. It has important advantages to do it this way (you can easily see how many electrons you actually have) and does not at all imply missing aromaticity. Additionally, the aromaticity in explained in-depth in the article (including equivalent bonds). Cacycle 20:48, 14 Apr 2005 (UTC)