Reactivity of R2AlH (R = Me, Bui) with selected aminoarsines and secondary amines

Academic Article

Abstract

  • Me AlH and Bu AlH were reacted with a series of nine aminoarsines, Me AsR (R = NMe , NPr , NPr , NBu , NBu , NC H , NC H , NC H , and N(C H ) NMe), in C D at room temperature, and the reactions were monitored by H and C NMR spectroscopy. The relative rates for initial As-N bond cleavage and final product formation were dependent on the steric requirements of the alkyl groups attached to aluminum and nitrogen in the starting materials. Overall rates were slower with Bu AlH than with Me AlH for a given aminoarsine. For most of the reactions, the predominant Al-containing products were the dimeric aminoalane compounds, [Me AlR] and [Bu AlR] . Although Al-N bond formation was the prefered mode of reaction, Al-As bond formation was also observed when the bulky Pr and Bu aminoarsine derivatives were used. The [Bu AlR] compounds were synthesized independently by the reaction of Bu AlH and the respective amine or, in the case of [Bu -AlNBu ] , by the reaction of Bu AlCl and LiNBu X-ray crystal structures were determined for the compounds [Me AlNC H ] , [Me AlN(C H ) NMe] , [Bu AlNMe ] , and [Bu AlN-(C H ) NMe] . All of the compounds have planar Al N rings with the exception of [Bu -AlN(C H ) NMe] , which displays a puckered Al N ring. 2 2 2 2 2 2 2 2 4 8 5 10 6 12 2 4 2 6 6 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 6 12 2 2 2 4 2 2 2 2 2 2 2 4 2 2 2 2 2 2 4 2 2 2 2 i n i n i 1 13 i i i i i i i i i i i i i
  • Published In

  • Organometallics  Journal
  • Digital Object Identifier (doi)

    Author List

  • Lagrone CB; Schauer SJ; Thomas CJ; Gray GM; Watkins CL; Krannich LK
  • Start Page

  • 2458
  • End Page

  • 2464
  • Volume

  • 15
  • Issue

  • 10