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Water and oxygen sensitive compounds (tBu 3 SiEX 2 )2, tBu 3 SiEX 2  Do and (tBu 3 Si)2EX (E = AI, Ga, In; X = (F), Cl, Br; Do = OR 2 , NR 3 ) have been synthezised by reaction of EX 3  with tBu 3 SiNa in the absence or presence of donors. In addition, (tBu 3 Si)AlBr 2 , (tBu 3 Si) 2 InF and tBu 3 SiInBr 2  were prepared by reaction of AlBr 3  with (tBu 3 Sij 2 Zn or of (tBu 3 Si) 2 In- In(Si/Bu 3 ) 2  with AgF 2  and HBr, respectively. The adduct [tBu 3 SiAlBr 2  · AlBr 3  ·1/2MgBr 2 ] 2  is formed from AlBr 3  and (tBu 3 Si) 2 Mg(THF) 2 . Thermal decomposition of the compounds in solution or in the gas phase leads to the formation of tBu 3 SiEX 2  (from the dimers or the donor adducts) and of tBu 3 SiX. The Lewis acidity of tBu 3 SiEX 2  against donors increases in the direction Do = Et 2 O &lt; THF &lt; NEtMe 2 . Dehalogenation of (tBu 3 Si) 2 ECl with tBu 3 SiNa(THF) 2  in pentane at room temperature leads to clusters (tBu 3 Si) 4 Al 2 , (tBu 3 Si) 3 Ga 2  • , (tBu 3 Si) 4 In 2  and (tBu 3 Si) 3 Ga 2 Na(THF) 3 , reduction of tBu 3 SiGaCl 2  with Na or K in heptane at 100°C to the tetrahedran (tBu 3 Si) 4 Ga 4 . The structures of (tBu 3 SiGaCl 2 ) 2 , (tBu 3 Si) 2 GaCl, and [tBu 3 SiAlBr 2  AlBr 3  ·1/2MgBr 2 ] 2  have been determined by X-ray structure analysis.

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Supersilylverbindungen Der Borgruppenelemente, IV [1]. Supersilylelementhalogenide tBu 3 SIEX 2  Und (tBu 3 Si) 2 Ex Mit E = Al, Ga, In: Synthesen, Eigenschaften, Strukturen [2] / Supersilylated Compounds of the Thirteenth Group, IV [I]. Supersilylelement Halides tBu 3 SIEX 2  And (tBu 3 Si) 2 Ex with E = Al, Ga, In: Syntheses, Properties, Structures [2]