in toluene N2 atmosphere; addn. of soln. of SnMe3NEt2 to soln. of (ClBS2)2BN (20°C, stirring), heating (80°C, 72 h); removal of volatiles (vac.), dissolving (toluene/pentane), pptn. on standing (-15°C, 2 days), sepn. of crystals, redn. of vol., crystn.; sepn. (mechanically), washing (pentane); elem. anal.;

in toluene N2 atmosphere; addn. of soln. of SnMe4 to soln. of (ClBS2)2BN (room temp., stirring), heating (40°C, 5 h), further addn. of soln. of SnMe4, stirring (room temp., 4 h), heating (110°C, 12 h); not sepn.; (11)B and (1)H-NMR spectroscopy;

in toluene N2 atmosphere; 80°C, 72 h; not isolated; NMR spectroscopy;

in toluene N2 atmosphere; addn. of soln. of SnMe4 to soln. of (ClBS2)2BN (room temp., stirring), heating (40°C, 5 h), further addn. of soln. of SnMe4, stirring (room temp., 4 h), heating (110°C, 12 h); not sepn.; (11)B and (1)H-NMR spectroscopy;