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  • 1
    ISSN: 1434-4475
    Keywords: Crystal structure analysis ; Salicylaldehyde S-methylisothiosemicarbazone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Salicylaldehyd-S-methylisothiosemicarbazon wurde dargestellt und die Kristallstruktur vermessen: C9H11N3OS, monoklin, P21/n,a=5,169(4),b=16,853(10),c=11,367(5)Å, β=92,48(1)°,V=989,3(18)Å3,Z=4,d x =1,405 g cm−3. Die Struktur wurde mit Hilfe derPatterson-undFourier-Methode bestimmt und anisotropisch bis zu einemR-Wert von 0,046 verfeinert. Das Molekül ist praktisch eben, wobei ein grundlegender Unterschied zwischen der protonierten (H2 L) und der deprotonierten Form in den Komplexver-bindungen besteht. Die Formen unterscheiden sich durch eine Drehung um ca. 180° um die C1—N2-Doppelbindung. Die Moleküle H2 L sind durch Wasserstoffbindungen um das Symmetriezentrum zu einem Dimeren verknüpft.
    Notes: Abstract The crystal structure of salicylaldehyde S-methylisothiosemicarbazone together with the synthesis applied are reported: C9H11N3OS, monoclinic, P21/n,a=5.169(4),b=16.853 (10),c=11.367(5)Å, β=92.48(1)°,V=989.3(18)Å3,Z=4,d x =1.405g cm−3. The structure was solved by the heavy atom method and refined anisotropically to a residualR=0.046. The molecule is practically co-planar. There is only one basic difference between the title compound H2 L and its deprotonated and complexed forms reported hitherto: the nearly 180° difference in rotation about the formal double bond C1—N2. The molecules form hydrogen bonded dimers around $$\bar 1$$ .
    Type of Medium: Electronic Resource
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