Van der Waals Forces and Shielding Effects

  • P. Diehl
  • E. Fluck
  • R. Kosfeld
Conference proceedings

Table of contents

  1. Front Matter
    Pages i-3
  2. P. Diehl, E. Fluck, R. Kosfeld
    Pages 5-7
  3. P. Diehl, E. Fluck, R. Kosfeld
    Pages 7-15
  4. P. Diehl, E. Fluck, R. Kosfeld
    Pages 15-24
  5. P. Diehl, E. Fluck, R. Kosfeld
    Pages 24-32
  6. P. Diehl, E. Fluck, R. Kosfeld
    Pages 32-39
  7. P. Diehl, E. Fluck, R. Kosfeld
    Pages 46-53
  8. P. Diehl, E. Fluck, R. Kosfeld
    Pages 53-58
  9. P. Diehl, E. Fluck, R. Kosfeld
    Pages 59-61
  10. P. Diehl, E. Fluck, R. Kosfeld
    Pages 61-70
  11. P. Diehl, E. Fluck, R. Kosfeld
    Pages 70-73
  12. P. Diehl, E. Fluck, R. Kosfeld
    Pages 73-81
  13. P. Diehl, E. Fluck, R. Kosfeld
    Pages 81-90
  14. P. Diehl, E. Fluck, R. Kosfeld
    Pages 90-94
  15. P. Diehl, E. Fluck, R. Kosfeld
    Pages 94-98
  16. P. Diehl, E. Fluck, R. Kosfeld
    Pages 98-105
  17. P. Diehl, E. Fluck, R. Kosfeld
    Pages 106-114
  18. Back Matter
    Pages 115-122

About these proceedings

Introduction

The usefulness of solvent effect studies on NMR chemical shifts need not be elabo­ rated here; many applications of solvent effects continue to be published in great profusion. Quite a few intermolecular phenomenae may contribute to solvent shifts, but there is always the ubiquitous Van der Waals effect ow. Contrary to such other effects as neighbour anisotropy 0a, reaction field contribution 0E or complexation effects 0e, no major direct use has yet been found for the Van der Waals effect. So far the role of the Van der Waals effect has been that of a nasty, disturbing phenom­ enon, something to be eliminated at all costs. But it is precisely in this latter respect where almost all solvent effect studies fall short. Not only is Ow usually large (larger than 0a and 0E even in 1 H NMR and probably the dominating term with heavier nuclei), but it is strongly variable from one solute to another and even from one nu­ clear site to another in the same solute molecule. No referencing technique, however cleverly devised, will be capable of eliminating the Ow contribution from the other, presumedly more interesting contributions. It appeared quite recently that mathematical trickery by the name of "factor analysis" could achieve the sought-for separation of contribuants.

Keywords

Chemische Verschiebung Magnetische Kernresonanz Molekularkraft Shielding molecule

Editors and affiliations

  • P. Diehl
    • 1
  • E. Fluck
    • 2
  • R. Kosfeld
    • 3
  1. 1.Physikalisches Institut der Universität BaselSwitzerland
  2. 2.Institut für Anorganische Chemie der Universität StuttgartGermany
  3. 3.Institut für Physikalische Chemie der Rhein.-Westf.Technischen Hochschule AachenGermany

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-642-66176-1
  • Copyright Information Springer-Verlag Berlin Heidelberg 1975
  • Publisher Name Springer, Berlin, Heidelberg
  • eBook Packages Springer Book Archive
  • Print ISBN 978-3-642-66178-5
  • Online ISBN 978-3-642-66176-1
  • Series Print ISSN 0170-5989
  • About this book