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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 563 (1988), S. 87-95 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Chalcogenolates. 187. Studies on Salts of the Pyruvic Acid. 2. Crystal Structure of Potassium Pyruvate, Redetermination of the Structure of Sodium PyruvateThe title compounds M[O2C—CO—CH3], where M = Na and K, crystallize with Z = 4 in the monoclinic space group P21/n; cell dimensions see “Inhaltsübersicht”.The structure of the Na+ and K+ salt resp. has been determined from single crystal X-ray data measured at 20°C and refined to R's of 0.051 and 0.055 resp. (Rw = 0.055 and 0.057 resp.) for 1065 and 1308 resp. independent reflections.Both compounds are isostructural. The alkali metal ions are surrounded by seven oxygen atoms from five anions forming an irregular polyhedron.
    Notes: Die Titelverbindungen M[O2C—CO—;CH3] mit M = Na, K kristallisieren monoklin mit Z = 4 in der Raumgruppe P21/n; Na[O2C—CO—CH3] a = 21, 905(3) Å, K[O2C—CO—CH3] a = 22,027(2) Å, b = 5,269(1) Å, b = 5,835(2) Å, c = 3,671(1) Å, c = 4,004(4) Å, β = 91,34(2)°. β = 90,88(3)°. Für die Na+-bzw. K+-Verbindung wurde die Struktur aus bei 20°C vermessenen röntgenographischen Einkristalldaten unter Verwendung von 1065 bzw. 1308 symmetrieunabhängigen Reflexen bestimmt und bis auf Gütefaktoren von R = 0,051 bzw. 0,055 und Rw = 0,055 bzw. 0,057 verfeinert.Beide Verbindungen sind isostrukturell. Das jeweilige Alkalimetallion ist von sieben O-Atomen, die von fünf verschiedenen Anionen stammen, unregelmäßig koordiniert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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