Dimeric Rh Complexes Supported by a Bridging Phosphido/Bis(Phosphine) PPP Ligand

Rh complexes of a tridentate PPP ligand bearing 1,2-pyrrolediyl
linkers have been prepared, including examples with the central P
donor being either a phosphine or a phosphide. Three bimetallic Rh
complexes containing the diamandoid Rh2P2 core
(P = phosphido) have been structurally and spectroscopically characterized.
The Rh–Rh interaction in these three dimers was examined by
way of structural comparisons and DFT investigations.