DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
ADA279194
Title:
Synthesis and Characterization of Aluminum-Phosphorus Adducts: X-Ray Crystal Structures of Cl3Al(dot)P(SiMe3)3(dot)C7H8 and Br3Al(dot)P(SiMe3)3(dot) C7H8
Descriptive Note:
Technical rept.
Corporate Author:
DUKE UNIV DURHAM NC DEPT OF CHEMISTRY
Report Date:
1994-05-05
Pagination or Media Count:
24.0
Abstract:
The attempted dehalosilylation reactions between AlX3 X Cl, Br and PSiMe33 in toluene in 11 mole ratios afforded only the adducts Cl3Aldo PSiMe33 I and Br3AldotPSiMe33 II, respectively. Compounds I and II were characterized by 1H, 13C, 27Al, and 31P solution NMR spectroscopy, as well as partial elemental analysis. In addition, the solid state structures of the toluene solvates of I and II were determined by single-crystal X-ray analysis. Characterization revealed that the solid solvated adducts I and II are isostructural and their crystals are isomorphous. In each compound, the Al and the P atoms reside in tetrahedral environments, with each X3AldotPSiMe33 X Cl, Br molecule associated with one interstitial toluene molecule in the crystals. These adducts are noteworthy in that they possess extremely short, essentially equal Al-P bond lengths For I Al-P 2.3924 A, and for III Al-P 2.3916 A, which are the shortest found to date in aluminum-phosphorus molecular species. Aluminum-phosphorus compound, Adduct synthesis, Crystal structure
Distribution Statement:
APPROVED FOR PUBLIC RELEASE