Conversion of ethylene to hydride and ethylidyne by an amido rhenium polyhydride
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abstract
Reaction of (PNPCy)ReOCl2 (PNPCy = N(SiMe2-CH2PCy2)2) with Mg and H2 yields (PNPCy)Re(H)4, whose unsaturation is demonstrated by its ability to add H2. "(PNPCy)ReH6" is an equilibrium mixture of a structure where all six H's are on Re and a structure where five H's are on Re and one H is on N. (PNPCy)Re(H)4 reacts with C2H4 within 10 min at 25C to give ethane and (PNPCy)ReH(C-CH3), together with its ethylene adduct.