in tetrahydrofuran under Ar, stirred at 20°C for 3 h; evapn. to dryness, double recrystn. from n-pentane at -30°C, molar ratio of (DEPE)Ni(Me3SiPPCMe3) : (DEPE)2Ni = 2:1;

in toluene under protective gas; 2 mmol (Me3Si)2PP(SiMe3)(CMe3) added to 2 mmol of the Pt complex in toluene at 20°C; mixt. stirred for 24 h at 20°C or for 2 h at 80°C; volatiles removed in vac.; the residue in a viscous oil;

room temp., 30 min; identification by NMR-spectroscopy, not isolated by fracd. crystn.;