in benzene SnCl4 was added dropwise to a soln. of Pb-compound in C6H6, stood for 1h; vac. sublimated, recrystd. from C6H6; elem. anal.;

in benzene SnCl4 was added to a soln. of Pb-compound in C6H6, stood for 5 h at 20°C; vac. sublimated;

in benzene byproducts: CO2, CH4, ((CH3)3Si)3CH; Pb-compound was heated with an excess of formic acid in C6H6 at 100°C, further by-products; elem. anal.;