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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 154-158 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure of Calcium Hydrogenphosphite Monohydrate, Ca(HPO3H)2 · H2OCa(HPO3H)2 · H2O is triclinic, space group P1, with a = 7.007(1), b = 8.100(1), c = 6.773(1) Å, α = 84.92(1), β = 95.72(2) and γ = 112.00(1)°; V = 354.1 Å3, Z = 2; ϱx = 2.251 g/cm3 and ϱob = 2.21(1) g3/cm3.The structure was refined to R = 0.019 for 1640 independent reflections. HPO3H- ions are linked together by hydrogen bonds (with acid hydrogen atoms) to form parallelograms. Chains of parallelograms are parallel to c axis. The coordination number of the calcium ion is seven; the mean values of Ca—O is 2.409 Å.
    Notes: Ca(HPO3H)2 · H2O est triclinique, groupe d'espace P1 avec a = 7,007(1), b = 8,100(1), c = 6,773(1) Å, α = 84,92(1), β = 95,72(2) and γ = 112,00(1)°; V = 354,1 Å3, Z = 2; ϱx = 2,251 g/cm3 et ϱob = 2,21(1),g/cm3.La structure a été affinée jusqu'à R = 0,019 pour 1640 réflexions indépendantes. Les ions HPO3H- sont liés entre eux par liaisons hydrogènes (faisant intervenir les “hydrogène” acides) pour former des parallèlogrammes. Des chaines de parallèlogrammes se développent parallèlement à l'axe c. La coordination des ions Ca2+ est sept; la valeur moyenne Ca—O est de 2,409 Å.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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