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  • 1
    ISSN: 0044-2313
    Keywords: Aza-closo-decaborane ; NB9H10 ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Crystal Structure of Aza-closo-decaborane, NB9H10Aza-closo-decaborane(10), NB9H10, crystallizes in the space group P21/n. The NB9 skeleton forms a distorted bicapped tetragonal antiprism with the N atom in a capping position. The structural data are compared to those of aza-closo-dodecaborane(12), NB11H12.
    Notes: Aza-closo-decaboran(10), NB9H10, kristallisiert in der Raumgruppe P21/n. Das NB9-Gerüst bildet ein verzerrtes zweifach überdachtes tetragonales Antiprisma mit dem N-Atom in axialer Position. Die Strukturdaten werden mit denen von Aza-closo-dodecaboran(12), NB11H12, verglichen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0009-2940
    Keywords: nido-Azadecaborane(12) ; closo-Azadodecaborane(12) ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A Novel Access to the Icosahedral closo NB11 SkeletonAt 200°C, the open skeleton of NB9H12 is closed to the icosahedral skeleton of NB11H10Y (3) by the action of three equivalents of Et3N · BH3, whereby one equivalent forms a bridge Y = —BH2—NEt2—CH2—CH2— between the adjacent cluster atoms N1 and B2; the product 3 crystallizes in the space group P¯. With L · BH3 (L = NMe3, SMe2) instead of Et3N · BH3, the nido-borane NB9H12 is transformed into the closo-borane (LBH2)NB11H11 (4a, b) at 140°C. By allowing tBuNH2 to react with 4b, the N-bonded ligand Me2SBH2 is removed with formation of the aza-closo-dodecaborate [t BuNH3] [NB11H11], thus opening a new route to closo-NB11H12.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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