Publicação
A molecular 'LEGO®' approach to high-spin triangular {MnIIILn2} clusters from {MnIII} and {Ln2} metalloligands
| datacite.subject.fos | Engenharia e Tecnologia::Engenharia Química | |
| datacite.subject.fos | Engenharia e Tecnologia::Outras Engenharias e Tecnologias | |
| datacite.subject.sdg | 07:Energias Renováveis e Acessíveis | |
| dc.contributor.author | Pantelis, Konstantinos N. | |
| dc.contributor.author | Cunha-Silva, Luís | |
| dc.contributor.author | Saber, Mohamed R. | |
| dc.contributor.author | Dunbar, Kim R. | |
| dc.contributor.author | Alexandropoulos, Dimitris I. | |
| dc.contributor.author | Stamatatos, Theocharis | |
| dc.date.accessioned | 2026-09-09T10:23:19Z | |
| dc.date.available | 2026-09-09T10:23:19Z | |
| dc.date.issued | 2026-07 | |
| dc.description.abstract | ABSTRACT: A stepwise "LEGO (R)-brick" strategy has been employed for the targeted assembly of rare low-nuclearity MnIII/LnIII clusters from preformed molecular building units. The mononuclear MnIII metalloligand (Pr2NH2)[MnIII(sacb)2] (1; sacbH2 = N-salicylidene-2-amino-5-chlorobenzoic acid) was combined with newly isolated dinuclear lanthanide complexes [Ln2(sacb)(sacbH)3L(MeOH)] [LnIII = Dy (2), Gd (3); L- = 2-amino-5-chlorobenzoate], affording the trinuclear heterometallic compounds [MnIIILn2(sacb)3(sacbH)2L] [LnIII = Dy (4), Gd (5)]. Single-crystal X-ray diffraction studies revealed that 4 and 5 possess triangular {MnIIILn2(mu-O2CR)3}6+ cores, representing the first structurally characterized triangular {MnIIILn2} complexes and rare examples of triangular {MLn2} (M = any 3d-metal ion) clusters. Magnetic studies have demonstrated that the MnIII-free {Dy2} precursor 2 displays weak field-induced slow relaxation of magnetization, whereas incorporation of the Jahn-Teller active MnIII ion leads to ferromagnetically coupled {MnIIILn2} species. In particular, the {MnIIIGd2} analogue 5 exhibits a high-spin ground state of S = 9, with weak ferromagnetic MnIII & ctdot;GdIII and GdIII & ctdot;GdIII exchange interactions. Although no slow magnetic relaxation was observed for the trinuclear complexes, the results demonstrate that controlled integration of a MnIII metalloligand can promote ferromagnetic exchange in preassembled {Ln2} units and provide a direct route to structurally defined high-spin 3d/4f triangles. | eng |
| dc.identifier.citation | Pantelis, K. N., Cunha-Silva, L., Saber, M. R., Dunbar, K. R., Alexandropoulos, D. I. , & Stamatatos, T. C. (2026). A molecular ‘LEGO®’ approach to high-spin triangular {MnIIILn2} clusters from {MnIII} and {Ln2} metalloligands. In: Dalton Transactions. 2026; vol. 55 (29), pp. 10931–10943. https://doi.org/10.1039/d6dt01428c | |
| dc.identifier.doi | 10.1039/d6dt01428c | |
| dc.identifier.eissn | 1477-9234 | |
| dc.identifier.issn | 1477-9226 | |
| dc.identifier.uri | http://hdl.handle.net/10400.9/6424 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | |
| dc.publisher | The Royal Society of Chemistry | |
| dc.relation | Associated Laboratory for Green Chemistry - Clean Technologies and Processes | |
| dc.relation.hasversion | https://pubs.rsc.org/dt/article/55/29/10931/1276269/A-molecular-LEGOR-approach-to-high-spin-triangular | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | Molecular magnetism | |
| dc.subject | Lanthanide complexes | |
| dc.subject | Heterometallic clusters | |
| dc.subject | Metalloligand strategy | |
| dc.subject | Magnetization | |
| dc.subject | Manganese | |
| dc.subject | Ions | |
| dc.subject | Hysteresis control | |
| dc.title | A molecular 'LEGO®' approach to high-spin triangular {MnIIILn2} clusters from {MnIII} and {Ln2} metalloligands | eng |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardNumber | LA/P/0008/2020 | |
| oaire.awardTitle | Associated Laboratory for Green Chemistry - Clean Technologies and Processes | |
| oaire.awardURI | http://hdl.handle.net/10400.9/6093 | |
| oaire.citation.endPage | 10943 | |
| oaire.citation.issue | 29 | |
| oaire.citation.startPage | 10931 | |
| oaire.citation.title | Dalton Transactions | |
| oaire.citation.volume | 55 | |
| oaire.fundingStream | Concurso para Atribuição do Estatuto e Financiamento de Laboratórios Associados (LA) | |
| oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |
| person.familyName | Cunha-Silva | |
| person.familyName | Stamatatos | |
| person.givenName | Luís | |
| person.givenName | Theocharis | |
| person.identifier.orcid | 0000-0001-9229-1412 | |
| person.identifier.orcid | 0000-0002-9798-9331 | |
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