Rhodium(III) and palladium(II) complexes of some P-heterocycles; synthesis and X-ray structures

A few cyclic phosphine oxides such as, phosphabicyclo[3.1.0]hexane 3-oxides and a 4-dichloromethylene-1,4-dihydrophosphinine oxide were deoxygenated by trichlorosilane to give phosphines that served as P-ligands in novel Rh(III) and Pd(II) complexes. Inversion at the phosphorus atom in the phosphine stage made possible the synthesis of a diastereoisomeric Rh(III) complex.