Die Reaktion des tert.Butyl-lithiums mit Aluminiumtribromid; Molekülstrukturen von [HAl(CMe3)2]3 und [LiHAl(CMe3)3]2

Reaction of tert.Butyl-lithium with Aluminiumtribromide; Molecular Structures of [HAl(CMe₃)₂]₃ and [LiHAl(CMe₃)₃]₂ The reaction of tert.butyl-lithium with aluminiumtrihalide at low temperatures was reinvestigated. Four compounds were isolated: trimeric di(tert.butyl)alane(III) 1 , monomeric (solution in benzene)/dimeric (solid state) lithium-tri(tert.butyl)alanate(III) 2 , tri(tert.butyl)alane 3 and lithium-tetra(tert.butyl)alanate 4 . X-ray structure analyses gave a planar sixmembered Al? H heterocycle for 1 and a Li? H-bridged dimer showing intramolecular interactions of lithium with C? H σ-bonds for 2 .