Talk:Trimethylaluminium

Similar name

This substance has similar abbreviation with tetramethylammonium and should not be mixed up. — Preceding unsigned comment added by 202.40.139.130 (talk) 13:35, 29 April 2013 (UTC)

Cleanup

what is the chemical equation of oxidation of trimethyaluminum.what are the conditions and the mechanisms cleanup tag uncalled for? all articles can be improved upon, this article pretty much sums up trimethylaluminum, it should have a chembox and a molecule pic and much more but that does not mean it is not up to quality standards. V8rik 16:35, 15 July 2005 (UTC)

I agree- I've asked Jon the Geek what he had in mind. Walkerma 17:06, 15 July 2005 (UTC)

I was talking mostly about grammar. I apologize if "cleanup" was the wrong tag to throw in, it just seemed like a hard-to-read article with some grammar and style issues. I'll try to take a look at it myself later.

• • Thanks Jon for your reply, the cleanup tag is indeed not the right tag for grammar issues and I am not sure if there exists a suitable grammar tag. Most of the time grammar and spelling are corrected on the spot by a volunteer. I only speak and write globish so I will not attempt the grammer rework for this article. V8rik 16:43, 18 July 2005 (UTC)

Per Wikipedia:Template_messages/Cleanup, I've changed the tag to copyedit. I'm adding that tag list to my user page so I can find it more easily; I often see things that I'm personally not able (due to time or knowledge) to fix, so it's good to have a list that's more specific than cleanup. Jon the Geek 07:43, July 21, 2005 (UTC)

Picture

The picture is wrong as the bridging methyl groups are not oriented as shown. They are oriented symmetrically between the Al atoms such that a mirror plane exists that connects the two bridging carbons and is perpendicular to the molecule plane (Al-C-Al'-C'). Sebo, 30 Dec 2007 —Preceding unsigned comment added by 80.64.176.29 (talk) 11:34, 30 December 2007 (UTC)

I agree that. It's wrong. At the "inner square" the methylen groups at the top and bottom got three hydrogen-atoms PLUS two alloy-bonds, so that there are 5 bondings at each carbon in the sum. That's impossible for carbon! Sadorkan (talk) 08:38, 14 June 2013 (UTC)

Thanks, but check out Three-center two-electron bond or review a textbook on inorganic chemistry or organometallic chemistry.--Smokefoot (talk) 12:43, 14 June 2013 (UTC)

Thx for telling me about Three-center two-electron bond. Al₂(CH₃)₆ shows indeed 6 CH₃-groups. After studying Valence bond theory (again), I've understood. Unfortunately I'm not so sophisticated at Inorganic chemistry, Organometallic chemistry and Coordination complex. Thanks to you, I learned a little bit more. =o) I've found a good german Article that declares this well too. This article exists not in englisch. But maybe you want to read it, using google (or other) translation tool. ----> http://de.wikipedia.org/wiki/Mehrzentrenbindung. Sadorkan (talk) 11:51, 22 June 2013 (UTC)

Dimer

If it is possible, someone, please, add information about dimer structure. As for me, I don't understand, how carbon can have fifth valencyАрмонд^@ 08:26, 20 February 2023 (UTC)

There are two bridging methyl groups in the dimer. Each one is bonded to two aluminium atoms at the same time. Those carbon-aluminium bonds are not your normal covalent bonds (two-center two-electron bonds, 2c2e). They are instead three-center two-electron bonds (3c2e). You might prefer to think about it in terms of resonance: Al–C Al ↔ Al C–Al. The resonance hybrid would then be Al···C···Al. Each Al···C bond has a bond order of 0.5. Therefore carbon doesn't really form 5 full bonds. Instead, it forms 3 normal bonds to hydrogen and 2 half-strength bonds to aluminium. So the number of (full) bonds to carbon is still 4. The same bonding situation arises in other molecules, for example diborane.

Ben (talk) 08:54, 20 February 2023 (UTC)