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  • 1970-1974  (4)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    On the relation between molybdenum trioxide and rhenium trioxide type crystal structures (1973)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 29 (1973), S. 28-30 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The structural relatiion between MoO3-type and ReO3-type is clarified by considering layers of anions parallel to (13{\bar 1})MoO3 and (111)ReO3. MoO3 is then seen to be approximately cubic close-packed anions while ReO3 is cubic close-packed anions but with one-quarter of the anion sites unoccupied. The two structures may then be interconverted by a rotation operation resembling that which links ReO3- and PdF3-type structures. Photographs of ball models are used to illustrate the relations. No compounds are known which exhibit direct transition from ReO3-type to either MoO3- or PdF3-type. This is probably because of the large change in volume per anion. The interface between ReO3 and the close packed structures may be described as a dilation fault.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739473000069
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Continuous structure variation and rotating reciprocal lattices in the titanium–chromium oxides (1974)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 30 (1974), S. 265-272 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: High-index, rutile-derived, crystallographic shear (CS) structures occupy the composition range (Ti, Cr)Ox, 1.875 ≤ x ≤ 1.93. The CS plane rotates continuously from (121), to (132), about the [1{\bar 1}1]r zone axis, producing a continuous series of intermediate CS planes with (hkl)r = p. (121)r + q. (011)r. In the reciprocal lattice a fine net of superstructure reflexions rotates continuously relative to a coarse net of rutile subcell reflexions. Analogous reciprocal-lattice behaviour should be a general crystallographic phenomena and may appear in any system where superstructures occur. It is shown how the intermediate diffraction patterns may be indexed by deriving a single transformation matrix relating the unit cells of the high-index superstructures to that of the basic subcell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739474000544
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Crystal structures in the {l\overline{3}2} CS family of higher titanium oxides TinO2n−1 (1971)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 27 (1971), S. 210-215 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567740871001912
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Electron microscope study of an homologous series of shear structures based on molybdenum trioxide (1972)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 28 (1972), S. 187-191 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Electron microscopy and diffraction evidence is presented for the existence of four new molybdenum oxides MonO3n−2, n = 19, 20, 21, and 22.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739472000403
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    Paper (German National Licenses)
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