Counterintuitive Single-Molecule Magnet Behaviour in Two Polymorphs of One-Dimensional Compounds Involving Chiral BINOL-Derived Bisphosphate Ligands - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Magnetochemistry Année : 2021

Counterintuitive Single-Molecule Magnet Behaviour in Two Polymorphs of One-Dimensional Compounds Involving Chiral BINOL-Derived Bisphosphate Ligands

Résumé

The coordination reaction of the [Dy(hfac)(3)(H2O)(2)] units (hfac(-) = 1,1,1,5,5,5-hexafluoroacetylacetonate) with the [8 and PRIME;-(Diphenoxylphosphinyl)[1,1 and PRIME;-binaphthalen]-8-yl]diphenoxylphosphine oxide ligand (L) followed by a crystallisation in a 1:3 CH2Cl2:n-hexane solvent mixture led to the isolation of a new polymorph of formula [(Dy(hfac)(3)((S)-L))(3)](n) (1). The X-ray structure on single crystal of 1 revealed the formation of a mono-dimensional coordination polymer with three crystallographically independent Dy-III centres, which crystallised in the polar chiral P2(1) space group. Ac magnetic measurements highlighted single-molecule magnet behaviour under both zero and 1000 Oe applied magnetic field with magnetic relaxation through quantum tunneling of the magnetisation (QTM, zero field only) and Raman processes. Despite the three crystallographically independent Dy-III centres adopting a distorted D-4d coordination environment, a single slow magnetic relaxation contribution was observed at a slower rate than its previously studied [(Dy(hfac)(3)((S)-L))](n) (2) polymorph.

Domaines

Chimie
Fichier principal
Vignette du fichier
Mattei et al. - 2021 - Counterintuitive Single-Molecule Magnet Behaviour .pdf (2.15 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03512417 , version 1 (17-02-2022)

Licence

Paternité

Identifiants

Citer

Carlo Andrea Mattei, Bertrand Lefeuvre, Vincent Dorcet, Gilles Argouarch, Olivier Cador, et al.. Counterintuitive Single-Molecule Magnet Behaviour in Two Polymorphs of One-Dimensional Compounds Involving Chiral BINOL-Derived Bisphosphate Ligands. Magnetochemistry, 2021, 7 (11), ⟨10.3390/magnetochemistry7110150⟩. ⟨hal-03512417⟩
43 Consultations
22 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More