in tetrahydrofuran under Ar, stirred for 3 d at 20°C; removal of the volatiles (20°C, vac.), recrystn. from toluene at -78°C, dried in vac. (20°C, 1 h); elem. anal.;

in pentane 12 h; Ambient temperature;

in toluene under protective gas; 4 mmol ((Me3Si)2P)2 added to an equimolar amt. of the trans Pt-complex in toluene at 20°C; mixt. stirred for 6 h; the cis Pt-educt is observed as intermediate; volatile compounds removed in vac. at 20°C; residue extd. with cyclopentane; crystals of (Et3P)2Pt(PSiMe3)2 obtained on cooling to -78°C, recrystd. from n-pentane at -20°C;

in tetrahydrofuran under Ar, 20°C, 2 h; molar product ratio ((DPPE)Ni)2P2 : (DPPE)2Ni = 1:6;

in toluene under Ar, 12 h at room temp.; molar product ratio ((DEPE)Ni)2P2 : (DEPE)2Ni = 1:1 (detn. by (31)P-NMR-spectroscopy);

in toluene under protective gas; room temp.;