Metallated triphenylphosphinimine complexes

Abstract

The reagent [(o-C₆H₄PPh₂NSiMe₃)Li]₂·Et₂O 1 reacted with BCl₃ affording (o-C₆H₄PPh₂NSiMe₃)BCl₂4. Similarly reaction of 1 with Me₂AlCl resulted in a 1 ∶ 1 mixture of (o-C₆H₄PPh₂NSiMe₃)AlMe₂5 and (o-C₆H₄PPh₂NSiMe₃)Al(Me)Cl 6 while the analogous reaction of 1 with GaCl₃ gave (o-C₆H₄PPh₂NSiMe₃)₂Ga(o-C₆H₄PPh₂NH) 7. The analogous compound [Li(o-C₆H₄PPh₂NPh)]₂·Et₂O 2 was used to make (o-C₆H₄PPh₂NPh)GaCl₂8, while reaction of 2 with Me₂AlCl gave a mixture of [(o-C₆H₄PPh₂NPh)AlCl₂9 and the salt [(o-C₆H₄PPh₂NPh)₂Al][AlMeCl₃] 10. The compound 2 also reacts with PdCl₂(COD) affording [Pd(o-C₆H₄PPh₂NPh)(μ-Cl)]₂11 and [Pd(o-C₆H₄PPh₂NPh)₂] 12. Similarly, the complexes [Ni(o-C₆H₄PPh₂NPh)₂] 13 and [Ni(o-C₆H₄PPh₂N(3,5-C₆H₃Me₂))₂] 14 were prepared. The compounds 4–14 have been structurally characterized by X-ray methods.