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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 1746-1753 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Linked Three-membered Rings, X. Synthesis and Mode of Formation of a Donor-Stabilized Dicyclopropenylioallyl CationAttempted coupling of chlorobis(dimethylamino)cyclopropenium perchlorate (5a) with the lithio-cyclopropenium system 6 takes a completely different course compared to the corresponding reaction of the sterically crowded analogues 5b, c. A donor-stabilized tricarbenium ion 12 is formed in place of the expected triafulvalene dication 1a. MNDO-calculations on the model compound 14 allow preliminary conclusions to be made concerning the reaction mechanism.
    Notes: Chlorbis(dimethylamino)cyclopropenylium-perchlorat (5a) zeigt beim Kupplungsversuch mit dem Lithiocyclopropenylium-System 6 ein völlig anderes Reaktionsverhalten als die sterisch gehinderten Bis(dialkylamino)cyclopropenylium-Systeme 5b, c. Anstelle des erwarteten Triafulvalen-Dikationsalzes 1a bildet sich das donorstabilisierte Tricarbenium-Ion 12. Aus MNDO-Modellrechnungen an dem Grundkörper 14 lassen sich erste Anhaltspunkte für den Mechanismus der zu diesem Trikation führenden Reaktionssequenz ableiten.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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