Surprising Formation of a Carborane-Substituted Digallane

摘要

Classical inorganic compounds with Ga-Ga bonds such as Ga_2Br_3 have been known for several years. However, organometallic derivatives with Ga-Ga bonds are of newer vintage, and structurally characterized examples are restricted to the GA~I and Ga~(II) compounds [GaC(SiMe_3)_3]_4 and Ga_2R_4 (R=(Me_3Si)_2Ch, 2,4, 6iPr_3C_6H_2, and 2,4,60-(CF_3)_3C_6H_2).We report a new class of compound in which the Ga-Ga bond is supported by 2,4-dicarba-nido-hexaborate (2~-) carborane ligands.