Talk:Cyclobutadieneiron tricarbonyl

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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)