Journal article
A rare case of a zero-field single-ion magnet in a cerium(iii) pseudo-icosahedral complex
JR Thomas, MJ Giansiracusa, JT Mifsud, RA Mole, SA Sulway
Dalton Transactions | ROYAL SOC CHEMISTRY | Published : 2025
DOI: 10.1039/d4dt03231d
Abstract
The synthesis and structural characterisation of [Ln(Tp2-Fu)2]I (1-Ln; Ln = La, Ce, Pr, Nd) (Tp2-Fu = hydrotris(3-(2′-furyl)-pyrazol-1-yl)borate) have been reported as an isomorphous series adopting pseudo-icosahedral ligand field geometries. Continuous shape measurement (CShM) analyses on the crystal field environments of 1-Ln show the smallest values yet reported for complexes employing two hexadentate ligands (e.g. bis-scorpionate environments), with the smallest belonging to 1-La. Single-ion magnetism for 1-Ce, 1-Pr and 1-Nd was probed with ac magnetic susceptibility studies revealing slow magnetic relaxation for 1-Nd in applied magnetic fields and in zero-applied field for 1-Ce, which i..
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Grants
Awarded by University of New South Wales
Funding Acknowledgements
This research was supported by The University of Melbourne's Research Computing Services and the Petascale Campus Initiative. This work was performed in part at the Trace Analysis for Chemical, Earth and Environmental Sciences (TrACEES) Platform at the University of Melbourne. M. J. G. would like to thank the University of Melbourne for funding. S. A. S. and J. R. T. would like to thank the University of New South Wales for their funding. The authors would like to thank ANSTO for facilitating access to use the PPMS via P17507 and acknowledge the Australian Research Council for their equipment grant (LE210100009). The authors would also like to acknowledge the Mark Wainwright Analytic Centre (MWAC) for aid in and use of their instrumentation for the collection of single-crystal X-ray diffraction data, NMR data at the NMR facility, and microanalysis through the XRF laboratory.