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Might it be worth to make something like a page on the cyclopentadienyl-LIGAND, and giving the organic molecule 1,2,3,4,5-Pentamethylcyclopentadiene his own page as the organic molecule. --Dirk Beetstra 07:31, 3 May 2006 (UTC)

Alternatively have this page be the free ligand and have a chart of links to its complexes. In any case the current article is tiny now and in some glorious future we should probably break it down just like you say. I havent looked at CpH article. Also note that the prep described for Cp*H is not the popular one that starts from acetaldehyde and gives on 100's of mL of the stuff- the prep in Inorg Syntheses. My student just ran out of energy and chemical knowledge, but this is the key prep. Also I dont think that the article explains the fundamental fact that unlike CpH, Cp*H is not a dienophile, or at least it does not self-dimerize. And probably the "cone angle" of Cp* must have been analyzed by someone. If you are a V enthusiast you will notice that Teuben's work is not cited.--Smokefoot 14:04, 3 May 2006 (UTC)
You may never guess again where my ETM enthousiasm is founded ...
I indeed noticed the missing synthesis via the cyclopentenone. The problem is mainly, that it is not Cp* alone, also the constrained geometry catalyst uses a Cp with substitution, and the differences with (C5Me4R)- etc, so probably I will rewrite CpH and Cp*H both towards an organic page (leave the organics to the organic chemists, only stating the obvious), and start a 'cyclopentadienyl' page, where I will try to collect some CpM-chemistry. --Dirk Beetstra 17:04, 3 May 2006 (UTC)

Splitting of the diene and dienyl[edit]

I have moved all information pertaining "cyclopentadienyl" (as the ligand used in organometallic chemistry) to Cyclopentadienyl complex. I suggest that this page evolves further as a description of the organic molecule, describing

  • physical properties,
  • it's synthesis,
  • reactivity
  • acidity (this can be linked with the page Cyclopentadiene)

The page 'cyclopentadienyl' now redirects to 'cyclopentadienyl complex' It might be worth to describe also the Cp* analogues like 1,2,3,4-tetramethylcyclopentadiene, etc.--Dirk Beetstra 20:32, 3 May 2006 (UTC)


Shouldn't be the references under the chapter references and not in the "text-block"? --Minihaa (talk) 19:58, 28 December 2012 (UTC)

Thanks for the suggestion, which was dealt with. --Smokefoot (talk) 22:13, 28 December 2012 (UTC)