in dichloromethane; toluene byproducts: (methylbenzyl)ditolylmethanes; under Ar, using Schlenk techniques; Ga complex and GaCl3 dissolved in toluene; CH2Cl2 added; stirred (ambient temp., 6 h); volatiles removed (vac.); hexane added; kept (ambient temp., 16 h); decanted; residued extd. with hexane; ext. combined; volatiles removed (vac.); crystals collected; washed with toluene-hexane (1:1) and hexane; dried (vac., 1 h);