Accession Number : ADA294957
Title : The First Example of an Aluminum-Phosphorus-Arsenic Mixed-Pnicogen Ring Compound: Et2A1p(SiMe3)2A1(Et)2As(SiMe3)2.
Descriptive Note : Technical rept.,
Corporate Author : DUKE UNIV DURHAM NC DEPT OF CHEMISTRY
Personal Author(s) : Cooke, Janeen A. ; Wells, Richard L. ; White, Peter S.
PDF Url : ADA294957
Report Date : 10 JUN 1995
Pagination or Media Count : 19
Abstract : The aluminum mixed-pnicogen compound Et2 A1P(SiMe3)2A1(Et)2As(SiMe3)2 (1) is the first structurally-characterized compound to contain a four membered ring with two aluminum centers bridged by two different heavier group 15 atoms. Compound 1 was synthesized by the equilibration of Et2A1P(SiMe3)22 (2) and Et2A1As(SiMe3)22 (3) in a 1:1 mole ratio under ultrasonic conditions. Low-temperature X-ray crystallographic analysis revealed that crystals of 1 belong to the monoclinic system, space group C2/c (C2h6), with unit cell dimensions of a = 17.960(4), b = 9.328(1), C = 20.194(5) A, and Beta = 100.33(2) deg for Z =4, and isomorphous with those of 2 and 3. The electron ionization (20 ev) mass spectrum of 1 shows a fragmentation pattern consistent with this compound and no peaks above m/z 400 consistent with either 2 or 3. jg
Descriptors : *ALUMINUM, *PHOSPHORUS, *ARSENIC, LOW TEMPERATURE, CRYSTAL STRUCTURE, FRAGMENTATION, METHYL RADICALS, CELLS, ATOMS, SEMICONDUCTORS, X RAYS, ELECTRONS, ULTRASONICS, SILICON, PATTERNS, IONIZATION, ETHYL RADICALS, CRYSTALLOGRAPHY.
Subject Categories : Inorganic Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE