Talk:Cyclobutadieneiron tricarbonyl

Aromaticity
Although it is rather easy to claim aromaticity, it is rather peculiar for cyclobutadienes. Is there any quantum mechanical basis for this claim? T.vanschaik (talk) 13:31, 26 April 2012 (UTC)
 * My comment: It undergoes Friedel-Crafts. Also it is not cyclobutadiene - it is a derivative of cyclobutadiene.  Possibly better viewed as a nido-FeC4 cluster.--Smokefoot (talk) 13:37, 26 April 2012 (UTC)
 * What sort of evidence are we looking for? I think the claim that the anti-aromatic cyclobutadiene turns aromatic once coordinated to a metal is repeated often enough. The system looks trivial to compute. Not going to dabble in OR, but just us talking here - are we looking for all in phase p orbitals on the cyclobutadiene ring? --Rifleman 82 (talk) 05:23, 27 April 2012 (UTC)
 * you could consider the iron to be 2+
 * and the cyclobutadiene as cyclobutadiendiide 98.97.118.150 (talk) 15:36, 25 October 2022 (UTC)
 * cyclobutendiide 98.97.118.150 (talk) 15:37, 25 October 2022 (UTC)
 * because of pi donations from iron's dxz and dyz orbitals 216.166.170.138 (talk) 22:34, 26 October 2022 (UTC)

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