| N-Bridged and H-Bridged Aminoalanes: Single-Crystal X-ray Structure Determinations for the Planar Dimer ?(Me3Si)2N2Al(mu-H)!2 and the Puckered Four- Membered Ring Compound (Me3Si)2N(Me2N)Al(mu-NMe2)2Al(H)N(SiMe3)2 |
30 JUN 1998 |
25 pages |
| Authors:
J. F. Janik; R. L. Wells; A. L. Rheingold; Ilia A. Guzei; DUKE UNIV DURHAM NC DEPT OF CHEMISTRY
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 | The known bis(bis(trimethylsilyl)amino)alane ?(Me3Si)2N2Al(mu-H)!2 (1) is obtained from disproportionation of the base-stabilized monomeric bis(trimethylsilyl)aminoalane (Me3Si)2NAlH2.NMe3 in refluxing toluene. The single-crystal X-ray structure determination for 1 provides a H-bridged planar dimer with exo-cyclic N(SiMe3)2 groups. The combination of 1 with HNMe2 in a 1:1 ratio results in competing aminolysis at the Al-H site and transamination at the Al-N(SiMe3)2 site of 1, as illustrated by the molecular structure of (Me3Si) 2N(Me2N)Al(mu-NMe2)2Al(H)N(SiMe3)2 (2) ... |
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| New Pnictinogallanes H2GaE(SiMe3)23 (E = P, As) - Formation, Structural Characterization, and Thermal Decomposition to Afford Nanocrystalline GaP and GaAs |
24 NOV 97 |
30 pages |
| Authors:
J. F. Janik; R. L. Wells; V. G. Young; A. L. Rheingold; I. A. Guzei; DUKE UNIV DURHAM NC DEPT OF CHEMISTRY
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| The new compounds, H2GaE(SiMe3)23, E = P (1), As (2), the first authenticated examples of a phosphinogallane and an arsinogallane, containing the GaH2 moiety, are prepared via efficient dehydrosilylation from the respective combinations of H3Ga.NMe3 and E(SiMe3)3 in diethyl ether or toluene. Compounds 1 and 2 are characterized by elemental analysis, NMR, IR, and mass spectrometry. Single-crystal X-ray structural studies show that the molecular structures of 1 and 2 feature ... |
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| Synthesis and Characterization of Potential Single-Source Precursors to Group 13-Antimonides |
30 OCT 96 |
23 pages |
| Authors:
R. A. Baldwin; E. E. Foos; R. L. Wells; P. S. White; A. L. Rheingold; DUKE UNIV DURHAM NC DEPT OF CHEMISTRY
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| The bulk of our recent studies in the area of single-source precursors to 13-15 semiconducting materials has focused primarily on Group 13- phosphides and arsenides. This work has led not only to the isolation and characterization of many new potential precursor compounds, but also to the facile synthesis of nanocrystalline 13- 15 materials. A review of this general area, however, reveals that little investigation has been done in the area ... |
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| Semiconductivity in Organoarsenic Materials. |
DEC 1977 |
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| Authors:
A. L. Rheingold; J. E. Lewis; STATE UNIV OF NEW YORK COLL AT PLATTSBURGH DEPT OF CHEMISTRY
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 | A general investigation of the macromolecule formation abilities of the hypothetical monomeric unit, RE, where R is an organic group and E either arsenic or antimony, resulted in the development of several novel crystalline materials possessing unique structural and electrical properties. Technical reports, publications, and oral presentations are tabulated. (Author) |
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