Unravelling of a [High Spin-Low Spin] ↔ [Low Spin-High Spin] Equilibrium in Spin-Crossover Iron(II) Dinuclear Helicates Using Paramagnetic NMR Spectroscopy.
broken symmetry
helicates
paramagnetic NMR
spin crossover
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
17 Jan 2022
17 Jan 2022
Historique:
revised:
10
11
2021
received:
02
08
2021
pubmed:
11
11
2021
medline:
11
11
2021
entrez:
10
11
2021
Statut:
ppublish
Résumé
Spin-crossover between high-spin (HS) and low-spin (LS) states of selected transition metal ions in polynuclear and polymeric compounds is behind their use as multistep switchable materials in breakthrough electronic and spintronic devices. We report the first successful attempt to observe the dynamics of a rarely found broken-symmetry spin state in binuclear complexes, which mixes the states [HS-LS] and [LS-HS] on a millisecond timescale. The slow exchange between these two states, which was identified by paramagnetic NMR spectroscopy in solutions of two spin-crossover iron(II) binuclear helicates that are amenable to molecular design, opens a path to double quantum dot cellular automata for information storage and processing.
Identifiants
pubmed: 34757659
doi: 10.1002/anie.202110310
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e202110310Subventions
Organisme : Spanish MICINN
ID : PGC2018-098630-B-I00
Organisme : Generalitat de Catalunya
ID : ICREA Academia 2018
Organisme : russian science foundation
ID : 17-13-01456
Informations de copyright
© 2021 Wiley-VCH GmbH.
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