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  • 1
    Electronic Resource
    Electronic Resource
    Zur Existenz des Tetrahydrogenorthoperiodations Die Kristallstruktur von LiH4IO6 · H2O (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 805-808 
    Details
    ISSN: 0044-2313
    Keywords: Lithiumtetrahydrogenorthoperiodate monohydrate ; crystal structure ; tetrahydrogenorthoperiodate Ion ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Existence of the Tetrahydrogenorthoperiodate Ion. The Crystal Structure of LiH4IO6 · H2OThe crystal structure of LiH4IO6 · H2O has been determined (P1; a = 564.74(12), b = 574.41(13), c = 970.4(6) pm, α = 101.37(2), β = 96.37(2), γ = 114.72(2)°; Z = 2; 5 731 independent reflections; R = 0.038). All hydrogen-atoms were localized from difference fourier map and refined without applying constraints. Thus the existence of the tetrahydrogenorthoperiodate-ion in the solid state is proved, unambigously. The crystal structure is discussed and compared to other alkaliorthoperiodates.
    Notes: Die Kristallstruktur von LiH4IO6 · H2O wurde bestimmt (P1; a = 564,74(12), b = 574,41(13), c = 970,4(6) pm, α = 101,37(2), β = 96,37(2), γ = 114,72(2)°; Z = 2; 5 731 unabhängige Reflexe, R = 0,038). Alle Wasserstofflagen konnten aufgefunden und frei verfeinert werden und beweisen erstmals die Existenz des Tetrahydrogenorthoperiodations im Festkörper. Die Kristallstruktur wird diskutiert und mit denjenigen anderer Alkaliorthoperiodate verglichen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946200508
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  • 2
    Electronic Resource
    Electronic Resource
    Li2H3IO6, eine neue Variante der Molybdänitstruktur (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 53-57 
    Details
    ISSN: 0044-2313
    Keywords: Dilithium trihydrogen orthoperiodate ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Li2H3IO6, a New Variant of the Molybdenite StructureLi2H3IO6 crystallizes in P61 (a = 529.70(8), c = 2 759.6(5) pm; Z = 6). The crystals are twinned by merohedry, described by m ‖ [001] and 2 ⊥ [001]. According to the results of an X-ray structure determination (2 778 diffractometer data, Rw = 0.047), Li2H3IO6 exhibits a layer structure, with oxygen forming a distorted variant of the sulfur partial structure in molybdenite (MoS2), however, with iodine and lithium in the more (Li) or less (I) distorted octahedral holes. The Li2IO6 packages are connected via strong hydrogen bonds along the edges of distorted trigonal prisms.
    Notes: Li2H3IO6 kristallisiert in der Raumgruppe P61 (a = 529,70(8), c = 2 759,6(5) pm; Z = 6). Die Kristalle sind merohedrisch verviellingt, beschrieben durch m ‖ [001] und 2 ⊥ [001]. Nach der Röntgenstrukturanalyse (2 778 unabhängige Reflexe, Rw = 0,047) liegt eine Schichtstruktur vor, in der die Sauerstoffatome eine verzerrte Variante der Schwefelteilstruktur von Molybdänit (MoS2) ausbilden, die Kationen besetzen die mehr (Li) oder weniger (I) verzerrten Oktaederlücken. Die Li2IO6-Schichtpakete werden entlang der Kanten der verzerrten trigonalen Prismen durch Wasserstoffbrückenbindungen miteinander verknüpft.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946200109
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  • 3
    Electronic Resource
    Electronic Resource
    Darstellung und Kristallstruktur von NaBi2AuO5 (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 48-52 
    Details
    ISSN: 0044-2313
    Keywords: Alkali bismuth gold oxide ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of NaBi2AuO5NaBi2AuO5 was obtained by hydrothermal reaction of ‘Bi2O5’, Au2O3 · 2H2O and saturated aqueous NaOH solution at temperatures from 300 to 600°C and oxygen pressure from 3 × 108 to 6 × 108 Pa for the first time. The crystal structure (P4b2; a = 1 220.02(6) pm; b = 386.68(3) pm; Z = 4; Rw = 0.022) consists of bisphenoidic distorted AuO4 groups, which are stacked in c-direction. They are connected by square pyramidal BiO5 units. Sodium is occupying holes within the Au/Bi/O framework thus formed.
    Notes: NaBi2AuO5 wurde durch Hydrothermalreaktion aus ‘Bi2O5’, Au2O3 · 2H2O und ges. wäßriger NaOH bei Temperaturen von 300 bis 600°C und Sauerstoffdrucken von 3 · 108 bis 6 · 108 Pa erstmals dargestellt. Nach den Ergebnissen der Röntgenstrukturanalyse (P4b2, a = 1 220,02(6); b = 386,68(3) pm; Z = 4; Rw = 0,022) liegen bisphenoidisch verzerrte AuO4-Gruppen vor, die in c-Richtung gestapelt sind. Die Verknüpfung erfolgt über quadratisch pyramidale BiO5-Baueinheiten. In dieser Raumnetzstruktur besetzt Natrium die vorhandenen Lücken.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946200108
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  • 4
    Electronic Resource
    Electronic Resource
    Neue Untersuchungen zu Präparation und Struktur von Rb4O6Professor Hans-Georg von Schnering zum 60. Geburtstage gewidmet (1991)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 598 (1991), S. 163-173 
    Details
    ISSN: 0044-2313
    Keywords: Rubidiumsesquioxide ; Rb4O6 ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reinvestigation of Rubidiumsesquioxide, Rb4O6Rb4O6 was prepared as a pure substance by solid state reaction between Rb2O2 and RbO2; it proves to be thermodynamically stable. The suggested structure was confirmed and refined by X-ray powder and single crystal methods (I43d; a = 932,42(4) pm; Rb4(O2-)2(O22-); Z = 4). Rb4O6 melts at 461°C followed by exothermic decomposition. The fact that O2- and O22- cannot be distinguished is discussed.
    Notes: Rb4O6 wurde durch Festkörperreaktion zwischen Rb2O2 und RbO2 erstmals röntgenrein dargestellt; es ist thermodynamisch stabil. Der bestehende Strukturvorschlag konnte durch röntgenographische Pulver- und Einkristalluntersuchungen bestätigt und verfeinert werden (I43d; a = 932,42(4) pm, Rb4(O2-)2(O22-), Z = 4). Rb4O6 schmilzt bei 461°C mit anschließender exothermer Zersetzung. Das Problem der Ununterscheidbarkeit von O2- und O22- wird diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19915980116
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  • 5
    Electronic Resource
    Electronic Resource
    Synthese und Kristallstruktur von LiAl[(P2O6)2] (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 1409-1412 
    Details
    ISSN: 0044-2313
    Keywords: Polyphosphate ; lithium aluminium polyphosphate ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure Determination of LiAl[(P2O6)2]Single crystals of previously unknown LiAl[(P2O6)2] have been obtained by reaction of Li2CO3, Al2O3 and H3PO4 (1:1:16) at 350°C. The title compound crystallizes in Pbcn (a = 1 244.54(1), b = 823.40(1), c = 892.46(1) pm; Z = 4). The least-squares refinement (with anisotropic temperature factors) was performed using 766 observed reflections yielding R = 0.029 and R(w) = 0.075. Four anion chains are running parallel to the shortest axis in the unit cell, the period of identity amounting to four. Aluminium is surrounded by an almost regular octahedron, lithium by a distorted tetrahedron of oxygen.
    Notes: Durch Umsetzung von Li2CO3, Al2O3 und H3PO4 im molaren Verhältnis 1:1:16 bei 350°C bildet sich vorher unbekanntes LiAl[(P2O6)2] einkristallin. LiAl[(P2O6)2] kristallisiert orthorhombisch in Pbcn mit a = 1 244,54(1), b = 823,40(1), c = 892,46(1) pm; Z = 4. Die Verfeinerung (mit anisotropen Temperaturfaktoren) erfolgte mit 766 beobachteten Reflexen bis zu R = 0,029 und R(w) = 0,075. Vier Phosphatketten verlaufen in der Elementarzelle mit einer Periodizität von vier parallel zu b. Aluminium ist oktaedrisch, Lithium verzerrt tetraedrisch von Sauerstoff umgeben.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946200814
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