Synthesis, characterization, and reaction of aluminum halide amides supported by a bulky β-diketiminato ligand

Article abstract of DOI:10.1021/ic701896r

Monomeric aluminum chloride amides with the general formula LAI(Cl)NR ₂ (1, R = Me; 2, R = iPr; 3, R = SiMe₃; L = HC[C(Me)N(Ar)]₂; Ar = 2,6-iPr₂C₆H₃) were prepared by selected routes. Treatment of LAIBr₂ (4) and LAII₂ with LiNMe₂ yielded LAI(Br)NMe₂ (5) and LAI(I)NMe₂ (6), respectively. The alkylation of 1 and 2 with MeLi gave the corresponding methylated compounds LAI(Me)NR₂ (7, R = Me; 8, R = iPr); however, no reaction of 3 with MeLi was observed because of steric hindrance. Subsequent fluorination of 1-3 afforded LAI(F)NR₂ (9, R = Me; 10, R = iPr; 11, R = SiMe₃). Compounds 1-11 were characterized by multinuclear NMR, electron impact mass spectrometry, and IR. The constitution of compounds 1-3 was confirmed by single-crystal X-ray diffraction studies.