Spin manual calculations

The stickplot can be obtained by manual calculation, but is also conveniently computed with a numeric procedure to obtain the effective spin values leg and their multiplicities Ni in a computer algorithm described in Section 3.2.7. The procedure to obtain the -factor when 2nd order effects occur is described in Section 3.2.7, see also Exercise E3.4. Examples of spectra showing second order effects are given in Chapter 5 for perfluoro-cycloalkane radical anions, with several equivalent nuclei with large hyperfine couplings. 

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