Journal article
Zero‐Field Splitting in {MnIII3(μ3‐O)} Core Single‐Molecule Magnets Investigated by Inelastic Neutron Scattering and High‐Field Electron Paramagnetic Resonance Spectroscopy
Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark1
Institut Laue‐Langevin, 38042 Grenoble Cedex 9, France2
Laboratory for Neutron Scattering, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland3
Grenoble High Magnetic Field Laboratory, CNRS, BP 166, 38042 Grenoble Cedex 9, France4
Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland5
Present address: Institute of Chemistry, Academia Sinica, 128 Academia Rd Sec. 2, Nankang, Taipei 11529 Taiwan, ROC6
Present address: CNRS, CRPP, UPR 8641,33600 Pessac, France7
The global zero‐field splitting (ZFS) parameters of three, ferromagnetically coupled, μ3‐κ3‐[XO4]– (X = Cl, Re) capped, manganese(III) oximate single‐molecule magnets, [Mn3O(R‐sao)3(2,4′‐bipyridine)3XO4] [X = Cl, R = Me, Et; X = Re, R = Me; Me‐sao = 2‐hydroxyphenylethanone oximate(2–)], with crystallographic trigonal symmetry were determined by use of inelastic neutron scattering and high‐field/high‐frequency electron paramagnetic resonance spectroscopy.
ReO4– (O···O ca. 1.7 Å) is larger than ClO4– (O···O ca. 1.4 Å), which allows more parallel alignment of the local ZFS tensors. However, this chemical modification results in concomitant distortions in the equatorial ligand plane. Consistent parametrization of all spectroscopic data was achieved, and effective spin‐reversal barriers determined from alternating current susceptibility data were shown to be in good accordance with the energy barriers deduced from spectroscopy.
| Language: | Undetermined |
|---|---|
| Publisher: | WILEY‐VCH Verlag |
| Year: | 2015 |
| Pages: | 2683-2689 |
| ISSN: | 10990682 and 14341948 |
| Types: | Journal article |
| DOI: | 10.1002/ejic.201500084 |
| ORCIDs: | A. Sørensen, Mikkel and Bendix, Jesper |
