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  • Chemistry  (2)
  • 1970-1974  (2)
  • 1950-1954
  • 1973  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Thermodynamics of polyelectrolyte solutions. An empirical extension of the manning theory to finite salt concentrations (1973)
    New York : Wiley-Blackwell
    Biopolymers 12 (1973), S. 223-227 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The range of application of the Manning theory of polyelectrolyte solutions (J. Chem. Phys., 51, 924 (1969)) is extended to finite concentrations of simple electrolyte by the empirical superposition of excess free energies arising from (i) interactions between mobile ions and polyions and (ii) mutual interactions between mobile ions. A comparison of published results with the modified theory shows excellent agreement over a wide range of concentrations. Results for a polyelectrolyte of low charge density suggest that the effective inter-charge spacing may be less than that of the fully extended polyion.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.1973.360120202
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  • 2
    Electronic Resource
    Electronic Resource
    Specific and stereospecific water eliminations in the mass spectra of bicyclo[3.3.1]nonanols (1973)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 7 (1973), S. 1137-1152 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: By the use of site-specific and stereospecific deuterium labelling, it has been possible to show that loss of the elements of water from all possible bicyclo[3.3.1]nonanols (I to V) in the mass spectrometer, takes place in a substantially stereospecific manner. The position of abstraction of the hydrogen atom by the hydroxyl group can be related to the proximity effects that are present in the ground state conformers, while the [M]+ / [M - H2O]+ ratio appears to depend on the minimum H--OH intramolecular distance in the more stable conformations.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210071003
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    Paper (German National Licenses)
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