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  • 1
    ISSN: 0899-0042
    Keywords: 3-(S)-(1-phenylethyl)-2-thioxo-2,3-dihydro-1,3-thiazol-4(5H)-ones ; 3-(S)-(1-phenylethyl)-rhodanines ; CD spectra ; empirical force field calculations ; theoretical calculation of CD spectra ; chromatographic diastereomer separation ; triacetylcellulose ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 3-(S)-(1-phenylethyl)-5-methyl- and 5-phenyl-rhodanine have been studied by single crystal X-ray crystallography. The crystals of the 5-methyl compound were shown to contain equal amounts of the 5-(R) and 5-(S) diastereomers, while the crystals of the 5-phenyl compound only contain the 5-(S) diastereomer. The UV and CD spectra of the 5-H2 compound have been analyzed on the basis of CNDO/S calculations, and the CD spectrum has been reproduced by semiempirical calculations.The 5-methyl diastereomers can be partly separated by chromatography on triacetylcellulose, and the CD spectra of the individual forms can be evaluated. The 5-phenyl compound undergoes rapid epimerization in solution, and also for this compound the CD spectra of both forms can be evaluated. The contribution of the 5-substituent follows Ripperger's sector rule for dithiocarbamates. Chirality 9:568-577, 1997. © 1997 Wiley-Liss, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 368 (1969), S. 44-52 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The reaction of diethylaluminiumchloride with chlorine azide at 25-30 °C leads to the trimeric ethylaluminiumchloridazide [C2H5AlClN3]3. This compound is an oily, colourless, and very hygroscopic liquid which can be distilled in vacuo, but slowly decomposes by formation of ethylaluminiumdichloride and ethylaluminiumdiazide. The vibrational spectrum (IR und RAMAN) indicates a structure consisting of a six-membered Al—N-ring (symmetry C3v).
    Notes: Bei der Reaktion von Diäthylaluminiumchlorid mit Chlorazid bei 25-30 °C entsteht trimeres Äthylaluminiumchloridazid, [C2H5AlClN3]3. Die Verbindung stellt eine ölige, farblose, sehr hygroskopische und im Vakuum destillierbare Flüssigkeit dar, die sich langsam unter Bildung von Äthylaluminiumdichlorid und Äthylaluminiumdiazid zersetzt. Nach dem Schwingungsspektrum (IR und RAMAN) liegt ein über die α-N-Atome der Azidogruppen verknüpfter Al—N-Sechsring vor (Symmetrie C3v).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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