carbon disulfide in not given elem. anal.;

in tetrahydrofuran under N2, C3H5Br added to soln. of Sn-compd. in THF; modified from Kunze, U.; Bolz, P.-R.; Winter, W. Chem. Ber. 1981, 114, 2744; evapd. to dryness, extd. with petroleum ether, vol. reduced by evapn., washed with hexane;

in tetrahydrofuran byproducts: LiBr; to (C6H5)3SnLi in THF dropped under stirring CS2 in slight excess, colour change to red brown with warmingp, after cooling addn. of C3H5Br in excess; column chromy. (silica gel/THF), solvent removed from the violet fraction, treated with ethanol, pptn., recrystd. from petroleum ether, elem. anal.;