Answers are grounded in this paper and cite their sources.
An expansion of the spin-spin interaction operator allows a derivation of matrix elements using the methods of Racah. Formulas are given for configurations involving two nonequivalent electrons and for n equivalent electrons. Extension of the results to other configurations may be made using known procedures.
No takes yet. Share an insight, caveat, or question.
F. R. Innes (1953) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: