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  • Keywords. Silicon; Silatrane; Trifluoromethyl compounds.  (1)
  • Molecular structures  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 130 (1999), S. 109-115 
    ISSN: 1434-4475
    Keywords: Keywords. Silicon; Silatrane; Trifluoromethyl compounds.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung.  1-(Trifluoromethyl)silatran, CF3Si(OCH2CH2)3N, wurde aus CF3Si(OCH3)3 und Triethanolamin gewonnen und durch NMR-, Schwingungs- und Massenspektroskopie charakterisiert. Die Verbindung kristallisiert in der monoklinen Raumgruppe P21/n mit a=777.2(1), b=1236.9(2), c=1002.8(1) pm, β=91.33(1)°, Z=4. Die equatorialen Si*O-Abstände der nahezu perfekten trigonalen Bipyramide betragen im Schnitt 165.3(2) pm, der axiale Si*C-Abstand 194.6(1) pm. Der transanulare Si*N-Kontakt, 202.4(1) pm, ist beträchtlich kürzer als in anderen Organylsilatranen.
    Notes: Summary.  1-(Trifluoromethyl)silatrane, CF3Si(OCH2CH2)3N, was prepared from CF3Si(OCH3)3 and triethanolamine and characterized by NMR, vibrational, and mass spectroscopy. The compound crystallizes in the monoclinic space group P21/n with a=777.2(1), b=1236.9(2), c=1002.8(1) pm, β=91.33(1)°, Z=4. The equatorial Si*O bond lengths of the almost perfect trigonal bipyramid average 165.3(2) pm, the axial Si*C bond length is 94.6(1) pm. The transannular Si*N contact, 202.4(1) pm, is considerably shorter than in other organylsilatranes.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1999 (1999), S. 247-253 
    ISSN: 1434-1948
    Keywords: Boron ; Fluorine ; Oxidation ; Nitrogen ; Molecular structures ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: (CF3)3B · NH3 (1) has been oxidized in aqueous solution using a platinum anode. At pH = 8-9 in CsOH/Cs2CO3 solution Cs[(CF3)3B-NO2] (2), Cs2[(CF3)3B-N(O)=N(O)-B(CF3)3] (3) and Cs2[(CF3)3B-N=N(O)-B(CF3)3] (4) are formed. Compound 3 slowly hydrolyses to yield the hydroxyborate Cs[(CF3)3B-OH] (5). Compound 2 and traces of 3 and 5 were also formed by oxidation of 1 or (CF3)3B · NHEt2 with ozone. The constitution of the novel borates has been deduced from multinuclear NMR, IR and mass spectra. The structures of 2-5 have been investigated by single-crystal X-ray diffraction.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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