85004-98-4Relevant academic research and scientific papers
Synthesis and characterization of organoaluminum compounds containing the (trimethylsilyl)methyl substitutent, Al(CH2SiMe3)2Br, Al(CH2SiMe3)2H, and (Me3SiCH2)2AlPPh2, and a reinvestigation of the chemistry of Me2AlPPh2 and Et2AlPPh2
Beachley Jr.,Tessier-Youngs, Claire
, p. 796 - 801 (2008/10/08)
The new amphoteric ligand (Me3SiCH2)2AlPPh2 has been prepared from the reactions of either Al(CH2SiMe3)S or Al(CH2SiMe3)2H with PPh2H or Al(CH2SiMe3)2Br with KPPh2 and fully characterized by analysis, cryoscopic molecular weight measurements, and IR and 1H NMR data. This aluminum phosphide is unique as it exists as a monomer-dimer equilibrium mixture in benzene solution. The syntheses and characterization of the new compounds Al(CH2SiMe3)2H and Al(CH2SiMe3)2Br are also described. Since the chemistry of aluminum phosphides as amphoteric ligands is of interest, the behavior of (Me3SiCH2)2AlPPh2, (Me2AlPPh2)2, and (Et2AlPPh2)2 toward common solvents Et2O, THF, and CH3CN was investigated. The aluminum phosphides readily cleave THF and reduce the triple bond of CH3CN at room temperature. However, neither THF nor Et2O form isolable adducts with aluminum phosphides. The unusual melting point behavior of aluminum phosphides is also discussed.
