in diethyl ether at 0°C;;

in chloroform-d1; dichloromethane-d2 CDCl3/CD2Cl2 = 1:1 at 0.5 M at -80°C; signals ((13)C-NMR) for (CH3)4Sn were visible at -20°C, upon recooling to -80°C redistribution of the allyl groups; (13)C-NMR, the identical spectrum could be obtained by reaction of Me4Sn and (allyl)4Sn with BF3*OEt2 (-80/+20/-80°C);

in diethyl ether