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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 218-233 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Donor/Acceptor Substituted Aromatic Systems, I. Dicarbonyl (η5 -cyclopentadienyl)(1,2,3-triphenylcyclopropenyl)ironDicarbonyl (η5 -cyclopentadienyl)(1,2,3-triphenylcyclopropenyl)iron (13), the structure of which has been determined by X-ray crystallography, is formed from triphenylcyclopropenylium tetra-fluoroborate or bromide and sodium dicarbonyl(cyclopentadienyl)ferrate. With bromine, iodine, tetrafluoroboric acid, trifluoroacetic acid, and triethyloxonium tetrafluoroborate 13 gives triphenylcyclopropenylium salts (12), with hydrogen halides 1,2-diphenylindene (23), with acyl chlorides in the presence of aluminium chloride 3-acyl-1,2-diphenylindenes (25), and with mercuric chlorides hexaphenylbicyclopropene 14. Irradiation of 13 leads to the (oxocyclobutenyl)iron complex 9e and triphenylcyclobutenone (28). Obviously, 13 does not display any properties of a cyclopropenyl anion.
    Notes: Dicarbonyl (η5 -cyclopentadienyl)1,2,3-triphenylcyclopropenyl)eisen (13), dessen Bindungsverhältnisse durch eine Röntgenstrukturanalyse gesichert wurden, entsteht aus Triphenylcyclo-propenylium-tetrafluoroborat oder -bromid und Natrium-dicarbonyl(cyclopentadienyl)ferrat. Mit Brom, Iod, Tetrafluoroborsäure, Trifluoressigsäure und Triethyloxonium-tetrafluoroborat entstehen aus 13 Triphenylcyclopropenylium-Salze (12), mit Halogenwasserstoffsäuren 1,2-Diphenylinden (23), mit Säurechloriden in Gegenwart von Aluminiumchlorid 3-Acyl-1,2-diphenylindene (25) und mit Quecksilberchlorid Hexaphenylbicyclopropen 14. Die UV-Bestrahlung von 13 ergibt einen (Oxocyclobutenyl)eisen-Komplex (9e) neben Triphenylcyclobutenon (28), Offensichtlich weist 13 keine Cyclopropenyl-Anion-Eigenschaften auf.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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