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- W2023204546 abstract "Abstract 57Fe Mossbauer spectra have been obtained for Fe(p-CH3C6H4SO3)2 between 2.3 and 300 K in zero field, and at 2.3 and 4.2 K in longitudinal applied magnetic fields ranging from 1.1 to 5.6 T. The complex is a fast-relaxing paramagnet under all conditions studied and there is no evidence of antiferromagnetic exchange coupling. The FeO6 chromophore is distorted by a trigonal elongation and the orbital ground state is the [( 2 3 ) 1 2 |±2〉 ∓ ( 1 3 ) 1 2 |∓1〉] doublet. The temperature dependence of the quadrupole splitting has been analysed via a crystal-field model to provide estimates of the axial field splitting parameter Ds = -93 cm-1, spin-orbit coupling constant λ = -70 cm-1, and fine structure constant Dσ = -28 cm-1. The magnetic properties of the complex are described by treating the ground state as a non-Kramers doublet with fictitious spin S = 1 2 . Five separate Mossbauer-Zeeman spectra can be fitted in this spin-hamiltonian approximation with identical values of the g- and A-tensor components, viz. g⊥ = 1.0, gu = 9.0; A⊥ ≈ 2.0 mm s-1. Au = -1.79 mm s-1. The trigonal z axis, the z axis of the electric field gradient tensor, and the easy axis of magnetisation are collinear, and the saturation value of the internal hyperfine field along this axis is +13.0 T." @default.
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- W2023204546 date "1983-07-01" @default.
- W2023204546 modified "2023-09-26" @default.
- W2023204546 title "Mössbauer spectroscopic study of the electronic and magnetic properties of iron(II) para-toluenesulphonate" @default.
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- W2023204546 doi "https://doi.org/10.1016/0301-0104(83)87013-x" @default.
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