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  • 1965-1969  (5)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 353 (1967), S. 311-319 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: V2O5 · J2O5 · 4 H2O, crystallizing as slightly soluble yellow platelets, and hitherto regarded as heteropolyacid, is a real hydrate. Its formation medium (pH ≤ 1), properties and IR spectrum indicate a dioxovanadium(V) iodate 2-hydrate, VO2JO3 · 2 H2O, built up from monomeric VO2+ and JO3- units which are linked via partially covalent vanadium-iodate bonds to a co-ordination polymeric lattice. Its thermal dehydration is accompanied by a hydrolytic collapse of the lattice.
    Notes: Das bisher als Heteropolysäure angesehene, in gelben Blättchen kristallisierende schwerlösliche V2O5 · J2O5 · 4 H2O ist ein echtes Hydrat. Bildungsmedium (pH ≤ 1), Eigenschaften und IR-Spektrum sprechen für ein Dioxovanadin (V)-jodat-2-Hydrat, VO2JO3 · 2 H2O, in dem monomere VO2+- und JO3--Gruppen über partiell kovalente Vanadin-Jodat-Bindungen zu einem koordinationspolymeren Gitter verknüpft sind. Die thermische Entwässerung erfolgt unter hydrolytischem Zusammenbruch des Gitters.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 364 (1969), S. 225-240 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: VOSO4 exists in two modifications, as water soluble tetragonal α-VOSO4 (platelets) and practically insoluble orthorhombic α-VOSO4 (prisms).The α-form and its thermal formation from VOSO4 · 3 H2O via a monohydrate, α-VOSO4 · H2O (platelets), are investigated. From X-ray powder and electron diffraction patterns, IR spectra, and the known structures of other tetragonal MOXO4 compounds such as VOMoO4, a structure proposal for α-VOSO4 is derived according to which monomeric VO2+ units, as quadratic OVO4 pyramids, are linked by fourfold-monodentate SO42- bridging ligands to coordination polymeric 2∞[VOSO4] layers. For α-VOSO4 · H2O an ordered insertion of H2O molecules between the layers of α-VOSO4 is suggested. Remarks are given on the swelling behaviour of α-VOSO4(· H2O) against n-alkanols and on structural relations to α-VOPO4(· nH2O) and Na2[(TiO)SiO4].
    Notes: VOSO4 existiert in zwei Modifikationen, als wasserlösliches tetragonales α-VOSO4 (Blättchen) und als praktisch unlösliches orthorhombisches β-VOSO4 (Prismen).Die α-Form und ihre thermische Bildung aus VOSO4 · 3 H2O über ein 1-Hydrat, α-VOSO4 · H2O (Blättchen), werden untersucht. Aus Röntgenpulver-, Elektronenbeugungs- und IR-Aufnahmen und durch Vergleich mit strukturbekannten tetragonalen MOXO4- Verbindungen wie VOMoO4 wird ein Strukturvorschlag für α-VOSO4 hergeleitet, nach dem monomere VO2+-Einheiten durch vierfach-einzähnige SO42--Brückenliganden zu quadratischen OVO4-Pyramiden ergänzt und zu koordinationspolymeren 2∞[VOSO4]-Schichten verknüpft sind. Im α-VOSO4 · H2O scheint eine geordnete Einlagerung von H2O-Molekeln zwischen die Schichten des α-VOSO4 vorzuliegen. Auf das Quellverhalten des α-VOSO4 (· H2O) gegenüber n-Alkanolen und die Strukturverwandtschaft mit α-VOPO4(· nH2O) und Na2[(TiO)SiO4] wird hingewiesen.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 27 (1965), S. 117-132 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es werden die Darstellung und Eigenschaften folgender Salze beschrieben: KH2PO3S, RbH2PO3S, CsH2PO3S; K2HPO3S; Na3PO2S2, Tl3PO3S, Tl3POS3; TlH2PO3S, Tl2HPO2S2. Für (NH4)3POS3 · H2O wird eine vereinfachte Darstellungsvorschrift mitgeteilt.
    Additional Material: 2 Ill.
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  • 4
    Publication Date: 1969-02-01
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley
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  • 5
    Publication Date: 1967-09-01
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley
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