Results Catalytic Activities of Cationic Complexes Derived from the Precursor [Rh (NBD)(PR3) 20, 3]+ C104-. Conversions and product distributions in the hydrogenation of styrene oxide (reaction time 6 h) with various cationic rhodium complexes derived from catalyst precursors,[Rh (NBD)(PR3).]+ C1O4-, are listed in Table I. The reactions were fairly fast. The complexes used except for the PMe3 derivative allowed 100% conversion of the ...