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  • 1970-1974  (1)
  • 1965-1969  (3)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 224 (1969), S. 156-171 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The field at the center of a Lorentz-sphere due to all dipoles within this sphere has been calculated, assuming inhomogeneous orientations of the dipoles in the sphere, as one must expect in real crystals. This field has very often been neglected. The calculation shows the existence of a coupling field which stiffens the dipole directions against localized torques due to “distortion fields”. In the case of ferromagnetism, one can calculate the coupling field of an expanded Lorentz volume. This is analogous to the quantummechanical exchange field, which is due to the excess exchange energy. In many cases the above dipole coupling field is more important than the wellknown exchange field because the “dipole coupling constants” exceed the exchange constant by orders of magnitude.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 101 (1968), S. 51-57 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aminalester dismutieren in Amidacetale und Tris-dialkylamino-methane, umgekehrt kommutieren letztere zu Aminalestern. Die Reaktionen laufen über Dissoziationsgleichgewichte, die durch Leitfähigkeitsmessungen bewiesen wurden.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Umsetzung von N.N-Dialkylformamid-Dialkylsulfat-Addukten mit Alkoholaten in Alkohol oder durch Umacetalisierung einfacher oder gemischter N.N-Dialkylformamid-dialkylacetale mit Alkoholen erhält man N.N-Dialkylformamid-dialkylacetale (Amidacetale); die bei der Umsetzung der N.N-Dialkylformamid-Dialkylsulfat-Addukte mit Dimethylamin erhaltenen N.N.N′.N′.-Tetramethyl-formamidinium-methylsulfate lassen sich mit alkoholfreien Alkoholaten zu den Bis-dimethylamino-alkoxy-methanen (Aminalester) umsetzen.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 3725-3731 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Orthoamides, XXIV. Synthesis and Reactions of Amide Thioacetals and Aminal ThioestersThe amide thioacetals 2 are obtained by reaction of the N,N-dimethylformamide dimethyl sulfate adduct 1 with sodium thiolates or by treatment of N,N-dimethylformamide diethyl acetal (3) with alkanthiols. Aminal thioesters 11 are formed by reaction of tetramethylformamidinium methyl sulfate (10) with alkali alkanethiolates or by treatment of aminal-tert-butylester 12 with alkanethiols. The compounds have properties similar to those of their oxygen homologues.
    Notes: Amidthioacetale 2 erhält man aus dem N,N-Dimethylformamid-Dimethylsulfat-Addukt 1 und Natriumthiolaten oder aus N,N-Dimethylformamid-diäthylacetal (3) und Alkanthiolen, Aminalthioester 11 aus Tetramethylformamidinium-methylsulfat (10) und Alkali-alkanthiolaten oder aus dem Aminal-tert-butylester 12 und Alkanthiolen. Die Verbindungen zeigen ähnliche Eigenschaften wie ihre Sauerstoff-Homologen.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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