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Gold(I) Complexes of Phosphaalkynes



Cationic gold(I) complexes of phosphaalkynes are formed by the interaction of [PtBu2(o-biphenyl)AuCl] with AgSbF6 and an excess amount of RC≡P in CH2Cl2 at room temperature. Free and coordinated phosphaalkyne readily exchange through an associative mechanism. In the solid state, the phosphaalkyne binds in a π fashion and slips towards the carbon end of the triple bond.