Accession Number : ADA302842

Title :   Reactions of Phenylaluminium Compounds with E(SiMe3)3 (E = P or As): X-Ray Crystal Structures of Ph3Al.E(SiMe3)3 (E = P or As) and Ph2(Cl)Al.P(SiMe3)3.

Descriptive Note : Technical rept.,

Corporate Author : DUKE UNIV DURHAM NC DEPT OF CHEMISTRY

Personal Author(s) : Cooke, Janeen A. ; Rahbarnoohi, Hamid ; McPhail, Andrew T. ; Wells, Richard L. ; White, Peter S.

PDF Url : ADA302842

Report Date : 20 DEC 1995

Pagination or Media Count : 31

Abstract : The independent reactions of Ph3Al with E(SiMe3)3 (E = P or As) in 1:1 mole ratios afforded the adducts Ph3Al.E(SiMe3)3 (E = P (I) and As (II), respectively). The attempted dehalosilylation reactions between Ph2AlCl and E(SiMe3)3 (E = P or As) in 1:1 mole ratios yielded only the adducts Ph2(Cl)Al.E(SiMe3)3 (E = P (III) and As (IV)). The adduct Ph(Cl)2Al.P(SiMe3)3 (V) was isolated from the reaction of equimolar amounts of PhAlCl2 and P(SiMe3)3. Compounds I-V were characterized by NMR spectroscopy and partial elemental analysis. In addition, the solid-state structures of I-III were determined by single-crystal X-ray analysis. Compound I crystallizes in the monoclinic space group P2 sub 1/n (C2h(5)), while II crystallizes in the triclinic space group P 1 bar(Ci(1)), each with two discrete molecules per asymmetric unit. Crystals of compound III belong to the orthorhombic space group P 2 sub 1 2 sub 1 2 sub 1(D2(4)). Compounds I-III are the first structurally-characterized compounds to contain phenyl-substituted Al centres bonded to heavier pnicogen atoms. jg p3

Descriptors :   *CRYSTAL STRUCTURE, *X RAYS, *ALUMINUM, *PHENYL RADICALS, *PHOSPHORUS, *ARSENIC, NUCLEAR MAGNETIC RESONANCE, SPECTROSCOPY, METHYL RADICALS, MOLECULES, STRUCTURES, SINGLE CRYSTALS, ATOMS, ASYMMETRY, SILICON, CHEMICAL REACTIONS, GROUP III COMPOUNDS, GROUP IV COMPOUNDS, GROUP V COMPOUNDS, SOLID STATE CHEMISTRY, GROUP II COMPOUNDS, GROUP I COMPOUNDS.

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE