Accession Number : ADA300304

Title :   Chemistry of Borane Anions: Formation Of Precursors And Their Conversion To Boron Aluminum Nitrides and Metal Borides.

Descriptive Note : Final rept. 1 May 92-30 Apr 95,

Corporate Author : OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS

Personal Author(s) : Shore, Sheldon G.

PDF Url : ADA300304

Report Date : 26 JUN 1995

Pagination or Media Count : 25

Abstract : Additional evidence was obtained for the formation BH3(2-) and B2H6(2-) and the sequence in which they are formed. The fluxional nature of the anion B10H11(-) was examined by NMR spectroscopy and a single crystal X-ray analysis of data obtained at -150 deg C revealed the presence of two fluxional isomers. An X-ray analysis proved the structure of 2-CH3CNB10H9(-). An X-ray structure of Al(BH4)43(-) showed the presence of eight Al-H-B bounds, a rare example of eight-coordinate aluminum. A unique example of a stable charge transfer complex B10H14I(-) was characterized in the solid state and in solution. Improved syntheses of lanthanide boranes were developed. A new morphology of BN nitride, a tubular form was prepared. Evidence was obtained for a possible mechanism by which this material is formed from amorphous BN is produced from the reaction of Cs with B3H3N3Cl3 AlN-BN composites were produced by a new method, and studies were initiated on the preparation of AlN powders and films. jg p.1

Descriptors :   *METALS, *ALUMINUM, *ANIONS, *BORON NITRIDES, *BORANES, NUCLEAR MAGNETIC RESONANCE, SPECTROSCOPY, POWDERS, PRECURSORS, COMPOSITE MATERIALS, MORPHOLOGY, FILMS, SINGLE CRYSTALS, X RAYS, NITRIDES, ISOMERS, CHEMISTRY, CHARGE TRANSFER, LANTHANUM, BORIDES.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Laminates and Composite Materials
      Crystallography
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE