Electromeric Rhodium Radical Complexes

"Chemical Equation Presented" Radical changes: One single P-Rh-P angle determines whether the odd electron in the paramagnetic complex [Rh(trop2PPh)(PPh3)] is delocalized over the whole molecule (see picture, blue) or is localized on the P - Rh unit (red). The two energetically almost degenerate electromers exist in a fast equilibrium, and the "red" complex has the highest spin density at Rh of all low valent Rh complexes observed to date. © 2010 Wiley-VCH Verlag GmbH and Co. KGaA.