Elemental analyses were performed at the Analytical Laboratory of the Institute of Inorganic Chemistry at G::ottingen. N,N0 -Bis(trimethylsilyl)diphenyliminophosphonamide4 and [Al- (NMe2)3]2 17were prepared according to literature procedure.
Elemental analyses were performed at the Analytical Laboratoryof the Institute of Inorganic Chemistry at G::ottingen.N,N0-Bis(trimethylsilyl)diphenyliminophosphonamide4 and [Al-(NMe2)3]217were prepared according to literature procedure.