Accession Number : ADA317917

Title :   Synthesis and Studies of Aluminum-Nitrogen, -Phosphorus and Arsenic Cycles and Clusters.

Descriptive Note : Final rept. 1 Jun 93-30 Sep 96,

Corporate Author : DUKE UNIV DURHAM NC DEPT OF CHEMISTRY

Personal Author(s) : Guard, Harold E.

PDF Url : ADA317917

Report Date : 04 NOV 1996

Pagination or Media Count : 6

Abstract : The attempted dehalosilylation reactions between AlX3 (X = Cl, Br) and P(SiMe3)3 in toluene in 1:1 mole ratios afforded only the adducts Cl3Al.P(SiMe3)3 (1) and Br3Al.P(SiMe3)3 (2), respectively. Compounds 1 and 2 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 1 and 2 were determined by single-crystal X-ray analysis. Characterization revealed that the solid solvated adducts 1 and 2 are isostructural and their crystals are isomorphous. In each compound, the Al and the P atoms reside in tetrahedral environments, with each X3Al.P(SiMe3)3 (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 1: Al-P = 2.392(4) A, and for 2: Al-P = 2.391(6) A, which are the shortest found to date in aluminum-phosphorus molecular species. p3

Descriptors :   *NITROGEN, *ALUMINUM, *PHOSPHORUS, *ARSENIC, NUCLEAR MAGNETIC RESONANCE, ENVIRONMENTS, SPECTROSCOPY, METHYL RADICALS, SYNTHESIS, MOLECULES, STRUCTURES, SINGLE CRYSTALS, CRYSTALS, CARBON, X RAYS, INTERSTITIAL, CYCLES, HYDROGEN, CHEMICAL BONDS, SILICON, CHEMICAL REACTIONS, SOLID STATE CHEMISTRY, ETHYL RADICALS, CHLORINE, BROMINE, TOLUENES, SOLVATES.

Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Physical Chemistry
      Crystallography
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE