in not given under Ar; decompd. in soln. at ambient temp.; detd. by (1)H and (13)C NMR spectra;

tin(ll) chloride

in diethyl ether byproducts: LiCl; dry Ar-atmosphere; addn. of Li-reagent (from (Me3Si)2CH2Cl and Li by refluxing for 24 h and filtration) to equimolar amt. of Ge-amide (from GeCl2 and Li-amide) at 0°C, addn. of equimolar amt. SnCl2, stirring (room temp., 1 h), standing overnight; sepn. of supernatant, evapn. (0°C, 0.01 Torr), extn. of Sn-amide (pentane), extn. into hexane, crystn. (-30°C); sublimable (110°C, 0.001 Torr); elem. anal.;

in tetrahydrofuran addn. of SnCl2 to stirred soln. of (C5H4SiMe3)Li; stirring for 24 h; evapn. in vac.; extn. into n-hexane; filtration; addn. of (bis(trimethylsilyl)amido)lithium etherate; stirring for 24 h; evapn. in vac.; extn. into n-pentane; removal of solvent; products could not be sepd. by distn.;

in tetrahydrofuran addn. of C5H3(SiMe3)2Li to a stirred soln. of SnCl2; addn. of bis(trimethylsilyl)amidolithium etherate in portions; stirring for 24 h; evapn. in vac.; extn. into n-pentane; products could not be sepd. by distn.;

in tetrahydrofuran 25 deg C; reflux, 3 h;

in hexane inert atmosphere; stirring for 2 h;; evapd.; sublimed (100°C/0.02 Torr); elem. anal.;;

catalyst: EtBr in hexane Kinetics; inert atmosphere; 32°C;;

in cyclohexane soln. of Sn compd. in cyclohexane was slowly added to stirred soln. of PhBr; not isolated;

in pentane byproducts: SnCl3; all manipulations without O2 and moisture; soln. of SnCl4 added dropwiseto excess of soln. of Pb compd. at 0°C by stirring; filtered, solvent removed in vac.; mixt. of mono- and disubstituted compds. in 1:1-1:4 ratio (depending on amt. of SnCl4) , which could not be separated by distn. or sublimation;