F-Substitutionsreaktionenan Ni(PF3)4 finden nicht mit NH(SiMe&, wohl aber mit seinem Natriumsalz 3 statt, wobei Ni(PF3)3{PFzN(SiMe&} (4) und Ni(PF&{PFzN(SiMe3)2}2 (5) anfallen. Die Thermolyse von 5 macht den freien Liganden PFzN(SiMe3)z leicht zuganglich. Mit Wasser und Diphenylchlorphosphin erhalt man aus 4 die Komplexe Ni(PF3)3(PF2NHSiMe3), Ni(PF3)3(PFzNHz) und N~( P F~) z ( P C I P~Z ) { P F~N ( P P~~)~) . Die Mechanismen der N -Si-Spaltungsreaktionen werden diskutiert. Fluorine Exchange Reactions in Metal Trifluoropbosphine Complexes, WI 1) Synthesis and Reactions of Nickel(0) Complexes of the Ligand [Bis(trimethylsilyl)aminoldifluorophosphie 2) Ni(PF3)4 does not react with NH(SiMe&, but it does react with the sodium salt of the latter (3); the fluorine exchange reactions produce Ni(PF3)3{PFzN(SiMe3)2} (4) and Ni(PF3)2-(PF2N(SiMe3)2)2 (5). The free ligand PFzN(SiMe& is readily accessible by thermolysis of 5. Treatment of 4 with water or diphenylchlorophosphine leads to the formation of the nickel(0) complexes Ni(PFj)3(PFzNHSiMe,), Ni(PF3)3(PFzNH2), and Ni(PFs)z(PCIPht){ PFzN(PPh2)z). The mechanism of the N-Si cleavage is discussed. Systematische Untersuchungen von F-Substitutionsreaktionen rnit N-und O-Ba-sen1.3-6) an der Modellsubstanz Ni(PF3)4 (1) fuhrten zu dem Ergebnis, &I3 diese 1) VII. Mitteil.: Th. Kruck, H . Jung, M . Hojer und H . Blume, Chem.
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