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  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure of Sr(BrO3)2 · H2O, Ba(BrO3)2 · H2O, Ba(IO3)2 · H2O, Pb(ClO3)2 · H2O, and Pb(BrO3)2 · H2OThe crystall structures of the isostructural halates Sr(BrO3)2 · H2O, Ba(BrO3)2 · H2O, Ba(IO3)2 · H2O, Pb(ClO3)2 · H2O, and Pb(BrO3)2 · H2O were determined using X-ray single crystal data (monoclinic space group C2/c—C2h6, Z = 4), The mean bond lengths and bond angles of the halate ions in the Ba(ClO3)2 · 1 H2O-type compounds, which correspond to those of other halates, are Cl—O, 149.0, Br—O, 165.9, I—O, 180.2 pm, ClO3-, 106.4, BrO3-, 104.0, and IO3-, 99.6°. The structure data obtained are discussed in terms of possible orientational disorder of the water molecules, strengths of the hydrogen bonds, influence of the lead ions on the structure, and site group distortion of the halate ions.
    Notes: Die Kristallstrukturen der isotypen monoklinen Halogenate Sr(BrO3)2 · H2O, Ba(BrO3)2 · H2O, Ba(IO3)2 · H2O, Pb(ClO3)2 · H2O und Pb(BrO3)2 · H2O wurden anhand von Röntgeneinkristalldaten bestimmt (C2/c—C2h6, Z = 4). Die gemittelten Bindungsabstände und -winkel der Halogenationen der im Ba(ClO3)2 · 1 H2O-Typ kristallisierenden Verbindungen (Cl—O: 149,0, Br—O: 165,9 und I—O: 180,2 pm sowie ClO3-: 106,4, BrO3-: 104,0 und IO3-: 99,6°) entsprechen denen anderer Halogenate. Eine mögliche Orientierungsfehlordnung der Kristallwassermoleküle, die Stärke der vorhandenen Wasserstoffbrücken, der Einfluß der Bleiionen auf die Struktur sowie die unterschiedliche Lagegruppenverzerrung der Halogenationen werden diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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