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Thermally averaged spin expectation values, <S1z>th = <S2z>th, calculated at 80 K for an applied field B = 8.0 T, for an antiferromagnetically coupled dimer comprising two high-spin (S1 = S2 = 5/2) iron(III) ions for the Hamiltonian ℋ = JS1·S2 + 2β(S1 + S2) · B. The zero-field splittings of the iron(III) sites are small and can be ignored.
