11B Chemical Shifts of Three Coordinate Boron

  • Heinrich Nöth
  • Bernd Wrackmeyer
Conference paper
Part of the NMR Basic Principles and Progress / NMR Grundlagen und Fortschritte book series (NMR, volume 14)

Abstract

The 11 B chemical shifts (δ11 B) for tervalent boron compounds depend upon the π-donor ability of the ligands. Therefore it is possible to observe δ11 B at rather high field although a low field resonance is expected on electronegativity grounds. Thus σ- and π-bonding effects have to be considered in discussing δ11 B data. The two effects are not easily separated because there are practically no compounds BX3 where X is a strong electronegative atom or group without free electron pairs available for π-bonding.

Keywords

Fluorine Bromine Phenanthrene Allyl Adamantane 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1978

Authors and Affiliations

  • Heinrich Nöth
    • 1
  • Bernd Wrackmeyer
    • 1
  1. 1.Institut für Anorganische ChemieUniversität MünchenMünchen 2Germany

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