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  • 1
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polycarbonyls, XVI. Synthesis and Structure of the Sulfur Analogue of Squaric Acid Dianion K2[C4S4·H2O]Sulfhydrolysis of 1,2- or 1,3-dithiosquaric acid diamides yields the sulfur analogue 4 of squaric acid dianion, the first member of the „thioxocarbons“. Spectroscopic data and intramolecular distances determined by X-ray diffraction indicate a symmetrical, delocalised electron system with C—C- and C—S-bond orders of n - 1.25 and 1.5, resp.
    Notes: Durch Sulfhydrolyse von 1,2- bzw. 1,3-Dithioquadratsäure-bisamiden entsteht das Schwefelanalogon 4 des Quadratsäure-Dianions, der erste Vertreter der „Thioxokohlenstoffe“. Spektroskopische Daten und die aus einer röntgenographischen Strukturbestimmung erhaltenen innermolekularen Bindungslängen weisen auf ein symmetrisches, delokalisiertes Elektronensystem mit C — C- bzw. C — S-Bindungsordnungen von n = 1.25 bzw. 1.5 him.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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