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  • 1980-1984  (3)
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  • 1
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 36 (1980), S. 259-265 
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A statistical distribution of ions M in lattices or partial lattices ∞[A1 - xMxLm] of mixed crystals being assumed, the probability functions PJ(V)(x) for single coordination polyhedra MLn (j = 1), pairs (j = 2) and larger clusters of MLn groups (j 〉 2) in 1D (v = 2) and v-connected 2D systems (v = 3, 4, 6) are calculated. On raising the connecting number v, increasing cluster probabilities are distinctly shifted to lower concentrations x of the foreign ion M. For a relation between the numerical values P(x) and experimental results, the mixed-crystal series (BaF)2[Zn1 - xCuxF4] of a four-connected 2D structure is given as an illustrative example.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 473 (1981), S. 42-50 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Note on the polymeric 8-ring structure of copper(II) dichlorophosphateAccording to the vibrational spectrum, the Cu atoms in Cu(O2PCl2)2 are linked to a polymeric 8-ring structure by O—P—O bridges resulting in a square planar coordination of Cu2+. From the EPR spectrum a canting angle 2γ≃ 104° between adjacent CuO4 planes can be deduced as an additional information. The EPR powder data are discussed with respect to an alternative structural model: 2γ may be located either within each polymeric Cu(II) complex resulting in a strongly corrugated chain structure, or all CuO4 planes of a chain may run parallel; 2γ then ought to be the angle between the CuO4 planes of different chains.
    Notes: Dem schwingungsspektroskopischen Befund entsprechend sind die Cu-Atome im Cu(O2PCl2)2 über O—P—O-Brücken zu einer polymeren Achtringstruktur verknüpft und quadratisch planar mit O-Atomen koordiniert. Aus dem EPR-Spektrum ergibt sich als zusützliche Information ein Verkantungswinkel 2γ ≃ 104° zwischen benachbarten CuO4-Quadraten. Auf Grund der EPR-Pulver-Daten werden zwei Strukturvorschläge diskutiert: Wird der Winkel 2γ von den über P verbrückten CuO4-Komplexen gebildet, so resultiert eine stark gewellte Kettenstruktur; sind die betreffenden CuO4-Komplexe jedoch in ein und derselben Ebene angeordnet, so muß der Winkel 2γ von den CuO4-Quadraten benachbarter Ketten gebildet werden.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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