Synthesis and Crystal Structure of the Dimer Bis((Bis(Trimethylsilylmethyl)Arsino)Diphenylgallane)

摘要

The dimer ((Me3SiCh2) 2AsGaPh2)2, obtained from the reaction of (Me3SiCH2)2AsH with Ph3Ga, has been characterized by partial elemental analysis, NMR spectroscopy, cryoscopic molecular weight determination, and complete single-crystal x-ray analysis. Crystals of the dimer are triclinic. The bond lengths (Ga-As 2.518(1) and Ga-As 2.530(1) A) and bond angles (As-Ga-As 85.08(2) and Ga-As-Ga 94.92(2) deg) in the centrosymmetric, and consequently planar, four-membered ring indicate a significant degree of strain. Keywords: Organogallium-arsenic; Dimeric gallium-arsenic compound.