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  • Electronic Resource  (2)
  • 1995-1999  (2)
  • Inorganic Chemistry  (2)
  • Bicyclo[3.2.1]octanes, stereoselective syntheses of
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  • Electronic Resource  (2)
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  • 1
    ISSN: 0009-2940
    Keywords: Silicon ; Germanium ; Tin ; Carbene homologues ; Digermene ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction of the diaminosilylene :Si(tBuNCH2CH2NtBu) (5) with the diaminogermylene :Ge(tBuNCH2CH2NtBu) is thought to proceed via a germasilene → silylgermylene rearrangement and dimerisation to furnish the (Z)-1,2-diamino-1,2-disilyldigermene (Z)-9. The X-ray structure analysis of (Z)-9 reveals a long Ge—Ge bond length of 245 pm and a large trans-bent angle of 42°. Air-oxidation of (Z)-9 takes place with retention of configuration at the germanium atoms to provide the corresponding substituted (Z)-2,4-digerma-1,3-dioxetane (Z)-10. Treatment of 5 with the stannylene :Sn[N(SiMe3)2)2 gives, as a final product, the hydridodisilylstannane 12. The structures of (Z)-10 and 12 were also determined by X-ray crystallography.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0044-2313
    Keywords: Potassium dithiocarbiminate ; dithiolates ; X-ray structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Structure of [ImNCS2K] (ImN = 1,3-Dimethylimidazoline-2-imino): a Novel Potassium DithiocarbiminateThe reaction of the 2-iminoimidazoline 4 with KMe gives the potassium imidate 7 from which the potassium 1,1-dithiolate 8 is obtained in almost quantitative yield. Crystals of C6H8N3S2K · 1/6 CH3CN (8 · 1/6 CH3CN) are triclinic, space group P1, Z = 6, a = 10.988(4), b = 13.597(8), c = 13.622(9) Å, α = 113.003, β = 105.53(3), γ = 105.62(3)°, V = 1636.90 Å3. The structure consists of a complicated 3-dimensional framework in which the K2 units bridged by the four sulfur atoms of two thiolate ligands are connected by nitrogen and sulfur bridges.
    Notes: Die Umsetzung des 2-Iminoimidazolins 4 mit KMe ergibt das Kaliumimidat 7, aus dem das Kalium-1,1-dithiolat 8 in fast quantitativer Ausbeute erhältlich ist. C6H8N3S2K · 1/6 CH3CN (8 · 1/6 CH3CN) kristallisiert triklin, Raumgruppe P1, Z = 6, a = 10.988(4), b = 13.597(8), c = 13.622(9) Å, α = 113.00(3), β = 105.53(3), γ = 105.62(3)°, V = 1636.90 Å3. Die komplexe Raumnetzstruktur besteht aus den durch die 4 Schwefelatome zweier Dithiolat-Liganden verbrückten K2-Einheiten, die ihrerseits über Stickstoff- und Schwefelatome verbunden sind.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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