in diethyl ether; toluene; benzene byproducts: [(C5H5)2ZrBr(CH2)(C5H5)2Zr(CH3)]; Schlenk setup, toluene soln. of metal complex added to Et2O/benzene soln. of ligand at -20°C (2:1), stirred for 12 d at this temp., evapd. at 5 degree.C, various product ratio at various conditions; extd. (pentane or benzene), filtered; NMR;

in tetrahydrofuran further metal-alkyl-halide substrates; Product distribution;

in diethyl ether; benzene stirred overnight at room temp. then for 1 h at 40°C; water added, org. layer sepd., dried (MgSO4), distd. under reduced pressure;