Alkoxo and amido compounds of group 13

The reaction of Al with alcohols like PhCH2OH or (c)HexOH gives the neutral alkoxo derivatives Al(OCH2Ph)(3) 1 and Al(O(c)Hex)(3) 2. Both compounds ar e tetrameric in solution. The first is a tetramer in the solid state while the latter is a trimer. The treatment of Li[AlH4] with PhCH2OH yields the p olymeric metalate [Li{Al(OCH2Ph)(4)}](n) [3](n). The metathesis reaction of AlCl3 with (LiOBu)-Bu-t leads to the LiCl adduct [{(THF)Li}(2){Al((OBu)-Bu -t)(4)}Cl] possessing a polymeric structure mediated by Li-Cl-Li bridges. A mides such as Ga(N(c)Hex(2))(3) 6 and amido metalates such as [Li(THF)(4)][ M {N(CH2Ph)(2)}4] 7 (M = Al - In 7a - 7c) are the result of the reaction of MCl3 with the corresponding lithium amide. The red solutions, appearing du ring the reactions with LiN(CH2Ph)(2), are due to the anion [N(CHPh)2](-). [{(THF)Cs}{N(CHPh)(2)}] 8 can be obtained as major product by treatment of HN(CH2Ph)(2) with Cs in THF.