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New Synthetic Pathways into the Organometallic Chemistry of Gallium.-Ultrasonic irradiation of Ga metal with alkyl iodides (II) and I2 (III) rapidly gives the Ga(III) compounds (IV) via a reactive intermediate material "GaI". This "GaI", generated by sonication of Ga and I2 in toluene and isolated, also inserts into the metal-iodine bonds of (. eta.5-C5H4Me)Mo(CO)3I and (η5-C5H5)Fe(CO)2I as witnessed by the synthesis of the binuclear complexes (V) and (VI) (for both space group P1, Z = 2) whose structures are determined by X-ray analysis. -(GREEN, M. L. H.; MOUNTFORD, P.; SMOUT, G.