作者:S. D. Waezsada、C. Rennekamp、H. W. Roesky、C. Röpken、E. Parisini
DOI:10.1002/(sici)1521-3749(199806)624:6<987::aid-zaac987>3.0.co;2-q
日期:1998.6
The reaction of secondary amines R'RNH with trimethyaluminum leads to the formation of dimeric aminoalanes [RR'NAIMe(2)](2) (1) (R = 2,6-Me2C6H3, R' = SiMe2(2,4,6-Me3C6H2)) and 2 (R = Ph, R' = SiMe3). Using a different stoichiometric ratio, a monomeric aminoalane [RR'N](2)AlMe (3) (R = Ph, R' = SiPh2Me) is obtained, having an aluminum atom of coordination number three due to the steric demand of the substituents. The synthesis of the corresponding aminogallanes 4, 5 and 6 is achieved by reaction of lithium amides LiNRR' (R = Ph, 2,6-iPr(2)C(6)H(3); R' = SiMe3, SiMe(2)iPr) with dimethylgalliumchloride, Me2GaCl, in n-hexane. The formation of the dimeric species is in 1 through carbon while that in 2 and 3 is formed through nitrogen. The X-ray single crystal structure analysis of 1, 2, 3 and 4 are reported.