Parallel-mode EPR spectra of the hexaaqua manganese(II) Ion in tetrahedral symmetry
Parallel-mode X-band EPR spectra of the manganese(II) hexaaqua ion as substitutional impurity in Cs[Mg(H2O)6]AsO4 are presented and interpreted. In this lattice the aqua ion, considering also the disposition of the hydrogen atoms, occupies a crystallographic site with tetrahedral symmetry. This rare...
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Académie des sciences
2024-02-01
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| Series: | Comptes Rendus. Chimie |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.266/ |
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| author | Juel Henrichsen, Margrete Bendix, Jesper Weihe, Høgni |
| author_facet | Juel Henrichsen, Margrete Bendix, Jesper Weihe, Høgni |
| author_sort | Juel Henrichsen, Margrete |
| collection | DOAJ |
| description | Parallel-mode X-band EPR spectra of the manganese(II) hexaaqua ion as substitutional impurity in Cs[Mg(H2O)6]AsO4 are presented and interpreted. In this lattice the aqua ion, considering also the disposition of the hydrogen atoms, occupies a crystallographic site with tetrahedral symmetry. This rare situation enables that the line positions as well as the intensities in the parallel-mode EPR spectra can be modelled with a simple three-parameter cubic-symmetry spin Hamiltonian, including the isotropic Zeeman interaction ($g$) pertinent to the $S={5}/{2}$ electronic spin, the isotropic hyperfine interaction ($A$), between the electronic spin and the $I={5}/{2}$ nuclear spin, and the cubic splitting ($a$) of the $S={5}/{2}$ manifold. A simple formalism, based on perturbation theory to grossly account for the observed intensities, is presented. We observe all parallel-mode-allowed hyperfine transitions associated with all fine-structure transitions. |
| format | Article |
| id | doaj-art-da6f88365187479d98b4b9023681f955 |
| institution | Kabale University |
| issn | 1878-1543 |
| language | English |
| publishDate | 2024-02-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Chimie |
| spelling | doaj-art-da6f88365187479d98b4b9023681f9552025-02-07T13:39:09ZengAcadémie des sciencesComptes Rendus. Chimie1878-15432024-02-0127S1354410.5802/crchim.26610.5802/crchim.266Parallel-mode EPR spectra of the hexaaqua manganese(II) Ion in tetrahedral symmetryJuel Henrichsen, Margrete0https://orcid.org/0009-0001-7190-7158Bendix, Jesper1https://orcid.org/0000-0003-1255-2868Weihe, Høgni2https://orcid.org/0000-0001-6194-1486Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, DenmarkDepartment of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, DenmarkDepartment of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, DenmarkParallel-mode X-band EPR spectra of the manganese(II) hexaaqua ion as substitutional impurity in Cs[Mg(H2O)6]AsO4 are presented and interpreted. In this lattice the aqua ion, considering also the disposition of the hydrogen atoms, occupies a crystallographic site with tetrahedral symmetry. This rare situation enables that the line positions as well as the intensities in the parallel-mode EPR spectra can be modelled with a simple three-parameter cubic-symmetry spin Hamiltonian, including the isotropic Zeeman interaction ($g$) pertinent to the $S={5}/{2}$ electronic spin, the isotropic hyperfine interaction ($A$), between the electronic spin and the $I={5}/{2}$ nuclear spin, and the cubic splitting ($a$) of the $S={5}/{2}$ manifold. A simple formalism, based on perturbation theory to grossly account for the observed intensities, is presented. We observe all parallel-mode-allowed hyperfine transitions associated with all fine-structure transitions.https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.266/Parallel-mode EPRManganese(II)Hyperfine interactionCubic symmetryFlip-flop transitions |
| spellingShingle | Juel Henrichsen, Margrete Bendix, Jesper Weihe, Høgni Parallel-mode EPR spectra of the hexaaqua manganese(II) Ion in tetrahedral symmetry Comptes Rendus. Chimie Parallel-mode EPR Manganese(II) Hyperfine interaction Cubic symmetry Flip-flop transitions |
| title | Parallel-mode EPR spectra of the hexaaqua manganese(II) Ion in tetrahedral symmetry |
| title_full | Parallel-mode EPR spectra of the hexaaqua manganese(II) Ion in tetrahedral symmetry |
| title_fullStr | Parallel-mode EPR spectra of the hexaaqua manganese(II) Ion in tetrahedral symmetry |
| title_full_unstemmed | Parallel-mode EPR spectra of the hexaaqua manganese(II) Ion in tetrahedral symmetry |
| title_short | Parallel-mode EPR spectra of the hexaaqua manganese(II) Ion in tetrahedral symmetry |
| title_sort | parallel mode epr spectra of the hexaaqua manganese ii ion in tetrahedral symmetry |
| topic | Parallel-mode EPR Manganese(II) Hyperfine interaction Cubic symmetry Flip-flop transitions |
| url | https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.266/ |
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