Synthese und Eigenschaften von Benzylgallium(indium)-Verbindungen. Die Kristallstrukturen von [(PhCH2)2GaBr]2, [(PhCH2)2GaN(H)t-Bu]2 und [PhCH2InCl2(THF)2] / Synthesis and Properties of Benzylgallium(indium) Compounds. The Crystal Structures of [(PhCH2)2GaBr]2, [(PhCH2)2GaN(H)t-Bu]2 and [PhCH2InCl2(THF)2]

(PhCH₂)₂GaBr (1) can be obtained by the redistribution reaction of GaBr₃ with Ga(CH₂Ph)₃ in a molar ratio 1:2. Treatment of 1 or (PhCH₂)₂GaCl with one equivalent of LiN(H)t-Bu gives the diorganogallium amide [(PhCH₂)₂GaN(H)t-Bu]₂ (2). The toluene-insoluble PhCH₂InCl₂ can be structurally investigated after dissolving in THF and crystallization as [PhCH₂InCl₂(THF)₂] (3). 1 - 3 were characterized with NMR, IR and MS techniques as well as by X-ray structure determinations. 1 forms two crystallographic independent dimers while 2 is a centrosymmetric dimer in the solid state. 3 is a monomer with a trigonal-bipyramidal coordination sphere at the indium center.