Synthesis, structure and slow magnetic relaxation of Ce(III) phenylacetate complex

0570942 - FZÚ 2024 RIV GB eng J - Journal Article
Krešáková, L. - Doroshenko, A. - Tarasenko, R. - Rohlíček, Jan - Orendáč, M. - Černák, J.
Synthesis, structure and slow magnetic relaxation of Ce(III) phenylacetate complex.
Polyhedron. Roč. 236, May (2023), č. článku 116368. ISSN 0277-5387. E-ISSN 1873-3719
R&D Projects: GA MŠMT(CZ) EF16_019/0000760
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : Ce(III) complex * crystal structure * O-donor ligand * slow magnetic relaxation * Rietveld method
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.6, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.poly.2023.116368

[Ce(PAA)3(H2O)]n complex (HPAA is phenylacetic acid) was synthesised and studied. The crystal structure was elucidated by the Rietveld method. Its crystal structure is polymeric and is built up of Ce(III) ions interconnected by bridging PAA- ligands. The Ce(III) ions are nona-coordinated by eight carboxylate oxygen atoms from six PAA- ligands, and one aqua ligand completes the coordination sphere yielding O8O donor set. The studied material displays field-induced slow magnetic relaxation. Temperature dependence of the relaxation time suggests the existence of direct and Raman relaxation processes . Similarly, as for the other Ce(III) complexes, the existence of Orbach process may be questioned due to the large discrepancy between the value of the energy gap obtained from static and dynamic measurements.
Permanent Link: https://hdl.handle.net/11104/0342280