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  • Chloride channel complex  (1)
  • Crystal Structure  (1)
  • Pentastrontium-trifluoride-{di-μ-fluoro-bis[tetrafluoroferrate(III)]}-hemafluoroferrate(III), Sr5F3[Fe2F10][FeF6]  (1)
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  • 1
    ISSN: 1432-1440
    Keywords: Cystic fibrosis ; Chloride channel complex ; Porin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The basic defect in cystic fibrosis is the chloride impermeability of the plasmalemm in different cells. A candidate for the chloride channel, thought to be affected in the syndrome, is “Porin 31HL” recently described by us. The molecule is i) expressed in the plasmalemm of different cells, it has ii) a molecular mass of 31000 Daltons, it shows iii) high conductance in artificial membranes and it can be iv) modified by 4,4′-Diisothiocyana-tostilben-2,2′-disulfonat. A porin in the outer membrane of cells should furthermore v) be regulated by modulators. All these characters of “Porin 31HL” correspond to those given in literature for chloride channels. The regulation of the channels can be explained by a two component flip flop model.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 597 (1991), S. 51-59 
    ISSN: 0044-2313
    Keywords: Pentastrontium-trifluoride-{di-μ-fluoro-bis[tetrafluoroferrate(III)]}-hemafluoroferrate(III), Sr5F3[Fe2F10][FeF6] ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dinuclear Anion Groups [Fe2F10]4- in the Crystal Structure of Sr5Fe3F19At single crystals of Sr5Fe3F19 a X-ray structure determination in the tetragonal space group 14/m was performed (a = 1429.4(3), c = 730.7(3) pm; Z = 4. wR = 0.019 for 502 independent reflections). Within the structure there are isolated, but disordered dimeric anion groups of edge-sharing octahedra [Fe2F10]4- (average Fe—F = 193.3 pm, Fe—Fe = 319.1 pm). They are embedded in a framework of strontium ions (C.N. 8-10) and single FeF63- octahedra (Fe—F = 191.0 resp. 192.7 pm, if corrected for thermal motion). The strong relations to the crystal structure of BaTiF5 and to further related fluoride compounds are discussed.
    Notes: An Einkristallen von Sr5Fe3F19 wurde eine röntgenographische Strukturbestimmung in der tetragonalen Raumgruppe 14/m durchgeführt (a = 1429,4(3), c = 730,7(3) pm; Z = 4. wR = 0,019 für 502 unabhängige Reflexe). In der Struktur treten isolierte, aber fehlgeordnete dimere Aniongruppen kantenverknüpfter Oktaeder [Fe2F10]4- auf (Mittelwert Fe—F = 193,3 pm, Fe—Fe = 319,1 pm). Sie sind eingebettet in ein Gerüst von Strontiumionen (KZ 8-10) und FeF63--Einzeloktaedern (Fe—F = 191,0 bzw. 192,7 pm, wenn für die thermische Schwingung korrigiert wird). Die engen Beziehungen zur Kristallstruktur von BaTiF5 und zu weiteren verwandten Fluorverbindungen werden diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 537-540 
    ISSN: 0044-2313
    Keywords: Antimony(V)-oxide chloride ; Synthesis ; IR Spectra ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis, IR Spectrum, and Crystal Structure of Sb12O18(OH)2Cl22 · 2CH2Cl2The title compound has been prepared by the reaction of Sb5O7Cl11 with dichloromethane at 20°C, forming colourless, moisture sensitive crystals. Sb12O18(OH)2Cl22 · 2CH2Cl2 crystallizes monoclinically in the space group P21/n with two formula units per unit cell. Structure solution with 2696 unique observed reflections, R = 0.042. Lattice dimensions at 19°C: a = 1350.2, b = 1466.7, c = 1392.9 pm, b̃ = 97.925°. The distorted octahedrally coordinated antimony atoms, bridged by oxygen atoms, exhibit a molecular array which may be seen as a fragment of the rutile type structure, isolated by terminal chloride ligands. The solvate molecule is associated by a hydrogen bridge OH···Cl.
    Notes: Die Titelverbindung entsteht in Form farbloser Kristalle bei der Reaktion von Sb5O7Cl11 mit Dichlormethan bei 20°C. Sb12O18(OH)2Cl22 · 2CH2Cl2 kristallisiert monoklin in der Raumgruppe P21/n mit zwei Formeleinheiten pro Elementarzelle. Strukturlösung mit 2696 unabhängigen beobachteten Reflexen, R = 0,042. Gitterkonstanten bei 19°C: a = 1350,2; b = 1466,7; c = 1392,9 pm, b̃ = 97,925°. Die verzerrt oktaedrisch koordinierten und über Sauerstoffatome verbrückten Antimonatome bilden ein molekulares Gerüst, das als ein durch terminale Chlorliganden isolierter Ausschnitt aus der Rutilstruktur angesehen werden kann. Das Solvatmolekül ist durch eine Wasserstoffbrücke OH…Cl assoziiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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