Abstract
As mentioned in Chapter 2, there is no direct effect of the π-MO’s on the Fermi contact term since this expression includes only s-eigenvectors. Nevertheless there are two mechanisms by which π-orbitals can influence J(A,B):
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a)
a direct contribution via spin-dipolar and orbital-mechanisms.
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b)
an indirect mechanism via changing s-eigenvectors in the MO’s of molecules of low symmetry for which a clean π-σ-separation is not possible.
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© 1979 Springer-Verlag Berlin Heidelberg
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Pregosin, P.S., Kunz, R.W. (1979). Appendix A. In: 31P and 13C NMR of Transition Metal Phosphine Complexes. NMR Basic Principles and Progress / Grundlagen und Fortschritte, vol 16. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-48830-6_6
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DOI: https://doi.org/10.1007/978-3-642-48830-6_6
Publisher Name: Springer, Berlin, Heidelberg
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