Fig. 2: The synthesis of Rh1/PNP-ND.

a Schematic illustration for synthesizing Rh1/PNP-ND. b Catalytic hydroformylation of styrene over the synthesized Rh samples. c Solid-state 31P NMR data.
a Schematic illustration for synthesizing Rh1/PNP-ND. b Catalytic hydroformylation of styrene over the synthesized Rh samples. c Solid-state 31P NMR data.