Low-Coordinate Aluminum Amides from Silylanilines and Alkylalanes

作者：Khandelwal Manish; Powell Douglas R; Wehmschulte Rudolf J^*

来源：European Journal of Inorganic Chemistry, 2011, 2011(4): 521-526.

DOI：10.1002/ejic.201000869

• Main group elements
• Aluminum
• Amides
• Low-coordination
• Lewis acids

The aluminum amides R2AlN(Ar)SiMe3 [R = Et, Ar = Dipp, 1 (Dipp = 2,6-iPr(2)C(6)H(3)-); R = iBu, Ar = Dipp, 2; R = Et, Ar = Mes, 3 (Mes = 2,4,6-Me3C6H2-);R = iBu, Ar = Mes, 4] were prepared by ethane or hydrogen elimination reaction between Et3Al or iBu(2)AlH and ArN(H)SiMe3 in refluxing hexane solution. The LiCl salt elimination route resulted in the formation of the monomeric aluminum amide Et2AlN(Mes)-SiPh3 (5) featuring three-coordinate aluminum and nitrogen centers. In addition, the synthesis and characterization of the dinuclear species Ph2Si{N(Mes)AlEt2}(2) (6) and the hydride-bridged eight-membered ring compound {MesN(SiMe3)Al(iBu)(mu-H)}(2)(mu-LiH)(mu-iBu(2)AlH) (7) are reported. All compounds have been characterized by H-1 and C-13{H-1} NMR spectroscopy, and compounds 5, 6, and 7 have also been characterized by single-crystal X-ray crystallography.

• 出版日期2011-2