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  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: StableMercury(1) Nitrogen Compounds. IV. Synthesis a n d Crystal Structure of 1,4-Diazine Dimercury(I) DinitrateThe product of the reaction of solutions of mercury(I) nitrate and 1,4-Diazine in water, [C4H4N2Hg2](NO3)2, crystaIlises rhombic (a = 1936(2), b = 1540(1), c = 686(1) pm) in the space group Cmca with Z = 8. The x-ray structure has been determined using PATTERSON and FOURIER syntheses and refined by least squares to an R value of 0.046. The results show that the compound exists as bent chains of \documentclass{article}\pagestyle{empty}\begin{document}${}_\infty ^1 \left[{ - \mathop {\rm N}\limits^ \oplus {\rm C}_{\rm 4} {\rm H}_{\rm 4} \mathop {\rm N}\limits^ \oplus - {\rm Hg} - {\rm Hg} - } \right],$\end{document} with the nitrate anions occupying positions between the chains.
    Notes: Das durch Umsetzung von Pyrazin mit Quecksilber(I)-nitrat aus wäßrigen Lösungen erhaltene [C4H4N2Hg2](NO3)2 kristallisiert rhombisch (a = 1936(2) pm, b = 1540(1) pm, c = 686(1) pm) in der Raumgruppe Cmca rnit Z = 8. Die Struktur wurde rontgenographisch mit Hilfe von PATTERSON- und FouRIER-Synthesen bestimmt und nach der Methode der kleinsten Fehlerquadrate bis zu einem R-Wert von 0,046 verfeinert. Die Substanz ist aufgebaut aus gewinkelten Ketten \documentclass{article}\pagestyle{empty}\begin{document}${}_\infty ^1 \left[{ - \mathop {\rm N}\limits^ \oplus {\rm C}_{\rm 4} {\rm H}_{\rm 4} \mathop {\rm N}\limits^ \oplus - {\rm Hg} - {\rm Hg} - } \right],$\end{document} zwischen denen die Nitrat-Ionen liegen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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