Funktionelle trimethylphosphinderivative

The preparation of [(Me3P)2Ni(Me2PCH2)2Al(CH2PMe2)]2, which is a trispirocyclic dimer, is reported. In solution the complex is in equilibrium with (Me3P)4Ni and {Ni[(Me2PCH2)2Al(CH2PMe2)2]}x (x unknown) and represents the first example of an organoaluminumphosphinenickel(0) complex.