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  • 1
    Electronic Resource
    Electronic Resource
    Neutralization-Reionization Mass Spectrometry and Matrix Isolation of Some 9-Silaanthracenes (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 185-190 
    Details
    ISSN: 0009-2940
    Keywords: 9-Silaanthracene, derivatives ; Ms, neutralization-reionization ; Matrix isolation ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Neutralization-reionization mass spectrometry of silaanthracene radical cations, which are generated from the 9,10-dihydro-9-silaanthracenes 1, 3, 8 and 11 under electron-impact conditions, indicates that silaanthracenes are stable molecues in the gas phase. Flash pyrolysis of the starting compounds mentioned above also yields the silaanthracenes 2, 4, and 10, which may be isolated in an argon matrix at 15 K and exhibit characteristic UV spectra.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240127
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Di-Grignard Compounds and MetallacyclesIn memoriam Georg Wittig (1987)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 26 (1987), S. 990-1005 
    Details
    ISSN: 0570-0833
    Keywords: Di-Grignard compounds ; Metallacycles ; Grignard reactions ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Just as the by now famous Grignard reaction can be used to prepare organomagnesium halides from organic monohalides, organic dihalides can be used under certain conditions to prepare di-Grignard compounds. Difficulties are encountered in particular when the two halide functionalities are separated by only a short carbon chain (i. e. by 1-3 carbon atoms): in such cases side reactions predominate. It has however recently become possible to obtain such “short” di-Grignard compounds on a preparatively useful scale. This opens up new perspectives for the synthesis of metallacyclic compounds of other main group and transition metal elements and in particular for metallacyclobutanes. The preparation, structure and application of a selected number of di-Grignard reagents will be treated in the present review.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.198709901
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    Paper (German National Licenses)
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