Accession Number:

ADA265268

Title:

Aluminum-Phosphorus Chemistry: Preparation and Structural Characterization of (Et2AlP(SiMe3)2)2, Et(Cl)2Al P(SiMe3)3, and i-Bu2(Cl)Al P(SiMe3)3

Descriptive Note:

Technical rept.

Corporate Author:

DUKE UNIV DURHAM NC DEPT OF CHEMISTRY

Report Date:

1993-03-01

Pagination or Media Count:

33.0

Abstract:

Reactions of R2AlCl R Et, i-Bu and EtAlCl2 with PSiMe33 and LiPSiMe32 were studied to investigate the potential use of dehalosilylation and lithium chloride elimination reactions for the preparation of compounds containing either Al-P-Al-P or Al-P-Al-Cl core rings. The dimeric compound Et2AlPSiMe322 1 was isolated from the 1 1 reaction of Et2AlCl and LiPS iMe32 at -78 deg C, as a result of LiCl elimination. The 11 reaction of EtAlCl2 and PSiMe33 yields EtCl2Al.PSiMe33 2. Interestingly a similar reaction between Et2AlCl and PSiMe33 in a 21 mole ratio also affords 2, in moderate yield, suggesting a rearrangement of the original aluminum alkylhalide. However, when Et2AlCl was reacted with PSiMe33 in a 1 1 mole ratio, the expected adduct Et2ClAldotP SiMe33 3 results. Unlike the Et2AlCl reaction, the analogous 21 mole reaction of i-Bu2AlCl and PSiMe33 forms the mono-chloro adduct, i-Bu2AlCl.PSiMe33 4, rather than a rearrangement product.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Coatings, Colorants and Finishes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE