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

Abstract

(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.