dc.contributor.author | Valentine, Andrew J. | |
dc.contributor.author | Geer, Ana M. | |
dc.contributor.author | Blundell, Toby J. | |
dc.contributor.author | Cliffe, Matthew J. | |
dc.contributor.author | Davies, E. Stephen | |
dc.contributor.author | Argent, Stephen P. | |
dc.contributor.author | Lewis, William | |
dc.contributor.author | McMaster, Jonathan | |
dc.contributor.author | Taylor, Laurence J. | |
dc.contributor.author | Reta Mañeru, Daniel | |
dc.contributor.author | Kays, Deborah L. | |
dc.date.accessioned | 2023-01-16T15:40:02Z | |
dc.date.available | 2023-01-16T15:40:02Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Dalton Transactions 51(47) : 18118-18126 (2022) | es_ES |
dc.identifier.issn | 1477-9226 | |
dc.identifier.issn | 1477-9234 | |
dc.identifier.uri | http://hdl.handle.net/10810/59307 | |
dc.description.abstract | Two-coordinate transition metal complexes are exciting candidates for single-molecule magnets (SMMs) because their highly axial coordination environments lead to sizeable magnetic anisotropy. We report a series of five structurally related two-coordinate Fe(II) m-terphenyl complexes (4-R-2,6-Xyl(2)C(6)H(2))(2)Fe [R = tBu (1), SiMe3 (2), H (3), Cl (4), CF3 (5)] where, by changing the functionalisation of the para-substituent (R), we alter their magnetic function. All five complexes are field-induced single-molecule magnets, with relaxation rates that are well-described by a combination of direct and Raman mechanisms. By using more electron donating R groups we were able to slow the rate of magnetic relaxation. Our ab initio calculations predict a large crystal field splitting (> 850 cm(-1)) and sizeable zero-field splitting parameters (ca. -60 cm(-1), |E| < 0.2 cm(-1)) for 1-5. These favourable magnetic properties suggest that m-terphenyl ligands have untapped potential as chemically versatile ligands able to impose highly axial crystal fields. | es_ES |
dc.description.sponsorship | We acknowledge the EPSRC [grant number EP/R004064/1]; the Leverhulme Trust [grant numbers RPG-2014-317; RF-2021-102]; and the University of Nottingham [Hobday Bequest] for financial support of this research. We would also like to thank the National Mass Spectrometry Facility at Swansea University for mass spectrometry measurements and the Microanalysis Service at London Metropolitan University for elemental microanalysis measurements. We thank Dr Maria Gimenez Lopez (University of Santiago de Compostela) for preliminary discussions, and Prof. Mark Murrie and Dr Emma Regincos Marti (University of Glasgow) for helpful discussions about AC susceptibility data. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Royal Society of Chemistry | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | Jahn Teller distorsion | es_ES |
dc.subject | ligand field | es_ES |
dc.subject | electronic structures | es_ES |
dc.subject | spin crossover | es_ES |
dc.subject | single | es_ES |
dc.subject | anisotropy | es_ES |
dc.subject | behavior | es_ES |
dc.subject | family | es_ES |
dc.subject | Fe | es_ES |
dc.title | Slow magnetic relaxation in Fe(ii) m-terphenyl complexes | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © The Royal Society of Chemistry 2022. This article is licensed under a Creative Commons Attribution 3.0 unported licence (CC BY 3.0). | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://pubs.rsc.org/en/content/articlelanding/2022/DT/D2DT03531F | es_ES |
dc.identifier.doi | 10.1039/d2dt03531f | |
dc.departamentoes | Polímeros y Materiales Avanzados: Física, Química y Tecnología | es_ES |
dc.departamentoeu | Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia | es_ES |