in benzene GaMes3 and GaCl3 in 1:2 molar ratio in benzene were stirred at room temp. for 18 h under inert atmosphere; benzene was removed by vac. distn., residue was washed with pentane, dried under high vac. for several hours; product can be further purifued by vac. sublimation at 140°C; elem. anal.;

in hexane under N2 or Ar; dropwise addn. of a suspn. of mesityllithium in hexane to GaCl3 in hexane at -63°C under stirring, stirred for 1 h at -63°C and for 14 h at room temp.; volatiles were removed under reduced pressure, distilled at 150°Cand 4.0E-3 Torr;