Slow migration of a phosphorus ligand between two metal centers.

Slow dance: Long believed to be impossible, migration of a phosphorus ligand via a bridging intermediate is observed between two metal centers in a diiron complex containing an asymmetric bridging ligand. This process occurs in a similar fashion to the migration of carbonyl ligands but at a rate slow enough to be studied by NMR spectroscopy. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z702234_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.