Unusual relaxation phenomena in the 57Fe Mössbauer spectra of FeX3 (X = Cl, NO3, ClO4, MnO4, 1/2(S2O8)) complex salts containing urea, methylated urea, chlorido or aquo ligands: studies on the influence of the ligand sphere and deuteration
Abstract Mössbauer spectra of Fe III complex salts with urea-related ligands show a broadened line due to magnetic relaxation. The origin of the relaxation is not known, mostly spin–spin type is considered. A study of a large number of compounds can be helpful to show differences in the Mössbauer parameters and to see the infuence of the chemical environment on the relaxation. We have evaluated the Mössbauer spectra of 13 compounds recorded at various temperatures with the Blume–Tjon two-state relaxation model and with the (unrestricted) Afanasev–Gorobchenko model. The latter showed significant differences between some salts, and proved the presence of spin–lattice relaxation. Graphical abstract
Authors
- Petr Novák (ORCID: https://orcid.org/0000-0003-2343-8729)
- Libor Machala (ORCID: https://orcid.org/0000-0001-5630-6955)
- Kende Attila Béres (ORCID: https://orcid.org/0000-0003-4257-0581)
- Shiro Kubuki (ORCID: https://orcid.org/0000-0001-8255-7811)
- Mátyás Pápai (ORCID: https://orcid.org/0000-0002-4819-0611)
- László Kótai (ORCID: https://orcid.org/0000-0001-6375-3120)
- Z. Homonnay (ORCID: https://orcid.org/0000-0001-5299-5394)
- Э. Кузманн (ORCID: https://orcid.org/0000-0002-0183-6649)
Institutions
- Eötvös Loránd University (HU)
- Institute of Materials and Environmental Chemistry (HU)
- HUN-REN Wigner Research Centre for Physics (HU)
- Tokyo Metropolitan University (JP)
- Palacký University Olomouc (CZ)
- HUN-REN Research Centre for Natural Sciences (HU)
Publication Details
- Journal
- Journal of Radioanalytical and Nuclear Chemistry
- Published
- 2024-10-25
- DOI
- https://doi.org/10.1007/s10967-024-09832-9
- Citations
- 1
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.12
Funders
- European Commission
- Magyar Tudományos Akadémia
- Eötvös Loránd Tudományegyetem
- Nemzeti Kutatási Fejlesztési és Innovációs Hivatal
- European Regional Development Fund
- Nemzeti Kutatási, Fejlesztési és Innovaciós Alap