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  • Inorganic Chemistry  (1)
  • Elasmobranchii
  • 1980-1984  (1)
  • 1981  (1)
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  • 1980-1984  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 480 (1981), S. 163-170 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: NMR Spectroscopic Studies of 15N Labelled Geminally Disubstituted CyclotriphosphazenesIt is demonstrated by means of some selected 15N labelled geminally disubstituted cyclotriphosphazenes, 15N3P3X4Y2 (X = Cl; Y = F, NH2, or SEt), as an example, that the coupling constants 1JPN may be of different signs. The absolute value of 1JPN is significantly influenced only by those substituents, which are bonded to the phosphorus nucleus directly concerned in the coupling. Also the 15N chemical shifts are only changed by substituents on directly bonded phosphorus atoms.
    Notes: Am Beispiel ausgewählter 15N-markierter geminal disubstituierter Cyclotriphosphazene, 15N3P3X4Y2 (X = Cl; Y = F, NH2, SEt), wird gezeigt, daß die Kopplungskonstanten 1JPN unterschiedliche Vorzeichen haben können. Auf die Größe von 1JPN haben nur jeweils diejenigen Substituenten einen merklichen Einfluß, die an den direkt an der Kopplung beteiligten Phosphorkern gebunden sind. Die 15N-chemischen Verschiebungen werden ebenfalls nur durch die Substituenten an unmittelbar benachbarten Phosphoratomen beeinflußt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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