Electromeric Rhodium Radical Complexes

Abstract

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 & Co. KGaA, Weinheim.