AI Article Synopsis
- High-field, multifrequency EPR data for CsMn(SO4)2.12D2O were analyzed, focusing on the [Mn(OD2)6](3+) cation below 30 K.
- The spin Hamiltonian parameters were determined as D=-4.491(7) cm(-1), E=0.248(5) cm(-1), and gx, gy, gz values close to 2, indicating the MnO6 framework's slight deviation from ideal symmetry.
- The significant E/D ratio highlights rhombic anisotropy caused by the interactions between manganese(III) and water molecules, linking it to ligand field effects from optical absorption data.
Article Abstract
High-field, multifrequency EPR data are presented for the alum CsMn(SO4)2.12D2O, containing the [Mn(OD2)6](3+) cation. The data are interpreted using the conventional S=2 spin Hamiltonian, and the following parameters determined for the data obtained below 30 K: D=-4.491(7) cm(-1), E=0.248(5) cm(-1), gx=1.981(5), gy=1.993(5), gz=1.988(5). Although the deviation of the MnO6 framework from idealized D(4h) symmetry is small, the magnitude of E/D is significant. The E parameter is related to ligand field parameters derived from the optical absorption spectrum. The rhombic anisotropy is shown to arise as a consequence of the pi-anisotropic nature of the manganese(III)-water interaction.
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