Reaction of phosphoranes with Mo(N-2,6-i-Pr2C6H3)(CHCMe3)[OCMe(CF3)2]2:: Synthesis and reactivity of an anionic imido alkylidyne complex

The reaction of Ph3P=CH2 with Mo(NAr)(CHCMe3)[OCMe(CF3)(2)](2) (Ar = 2,6-i-Pr2C6H3) produces the anionic alkylidyne complex {Ph3PMe} {Mo(NAr)(CCMe3)[OCMe(CF3)(2)](2)}. An X-ray structure determination of the complex reveals a bent Mo-N-C angle for the imido group, as expected when a metal-carbon triple bond is present. The anion has been shown to react with electrophiles predominantly at the imido nitrogen.