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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 3904-3911 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses with Compounds R3M — Hg — MR3, XVI: (Silylamino) methyl Radicals and Their DimersSchiff bases ArRC = NR′ 1 and 8 react with (Me3Si)2Hg to give the radicals ArRĊ — NR′SiMe3 3 and 9, resp., smoothly and spontaneously upon heating or irradiation. The latter are in equilibrium with the corresponding dimers, the 1,2-diaminoethanes 4 and 10. The equilibria depend strongly on the steric strain in the dimers. Finally, with R = Me the disproportionation products 6 and 7 are isolated quantitatively. ESR data of 3 and 9 are given. They are influenced by the bulkiness of the substituents at the C and N atoms.
    Notes: Schiffsche Basen ArRC = NR′ 1 bzw. 8 bilden mit (Me3Si)2Hg beim Erwärmen oder Belichten spontan und glatt die Radikale ArRC· — NR′SiMe3 3 bzw. 9. Diese stehen im Gleichgewicht mit den entsprechenden Dimeren, den 1,2-Diaminoethanen 4 bzw. 10. Die Gleichgewichte sind stark abhängig vom sterischen Druck in den Dimeren. Mit R = Me isoliert man jedoch schließlich quantitativ die Produkte der Disproportionierung 6 und 7. ESR-Daten von 3 und 9 werden angegeben. Sie werden beeinflußt von der Raumerfüllung am C- und N-Atom.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 2
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    Unknown
    Senckenberg Gesellschaft für Naturforschung
    In:  Senckenbergiana Maritima, 19 (3). pp. 195-222.
    Publication Date: 2020-06-17
    Description: The sediment budget for the Kieler Bucht, a semi-enclosed sea formed in a relatively homogeneous lithology of Pleistocene till in the Western Baltic, has been refined by utilising new data from independent approaches. Analysis of the detailed network of sub-bottom profiles from the "POSEIDON 23" cruise allowed clear definition of the postglacial muddy sediment deposits. Estimation of sand deposited is based on the pattern of surficial sediment distribution. Volumes of till eroded are calculated from survey, cartographic, and erosion data of the cliffs and submarine platforms around the bay. Best estimates for the sediment balance are an erosion of 2.6-2.9 X 109 m3 of till from the coast and sea floor, resulting in a sand production of 0.8-0.9 X 109 m3 and a deposition of about 5.5 X 109 m3 of muddy sediment. Congruence of various models of till eroded in relation to measured volume of sand and muddy deposits, suggests that the sediment budget is in balance, and that less than 10% of the muddy deposits need to be accounted for by invoking transportation into the Bucht.
    Type: Article , PeerReviewed
    Format: text
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