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The positive hyperfine coupling constants of the geminal 1H nuclei in cis‐1,2‐dimethyl‐ and cis‐1,2‐diphenylcyclopropane radical cations show a significant stereoelectronic effect: the 1H nuclei trans (anti) to the substituents are coupled much more strongly than the corresponding nuclei cis (syn) to them. Theoretical calculations on these radical cations and on bismethano[2,2]paracylophane as well...
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