Reactions of low valent transition metal complexes with fluorocarbons. Part XXIII. Pentafluorophenyl azide and hexafluoroazomethane

Abstract

Reaction between pentafluorophenyl azide and Ni(1,5-C₈H₁₂)₂ affords green crystals of a tetra-azadiene complex Ni[(C₆F₅)₂N₄](1,5-C₈H₁₂). Cyclo-octa-1,5-diene is displaced by the ligands L = PPh₃, PPh₂Me, PPhMe₂, or P(OMe)₃ and L₂= bipyridyl to form Ni[(C₆F₅)₂N₄]L₂. ¹H N.m.r. measurements on the bisdimethylphenylphosphine and bis(trimethyl phosphite) Complexes suggest two different modes of bonding for the tetra-azadiene ligands.

Hexafluoroazomethane reacts with Ni(1,5-C₈H₁₂)₂ to give [graphic omitted] (CF₃)(1,5-C₈H₁₂) and with trans-[IrCl(CO)(PPh₂Me)₂] to form a possible trifluoromethylimido-(nitrene) complex of iridium.