Azide-Coordination in Homometallic Dinuclear Lanthanide(III) Complexes Containing Nonequivalent Lanthanide Metal Ions: Zero-Field SMM Behavior in the Dysprosium Analogue - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Inorganic Chemistry Année : 2021

Azide-Coordination in Homometallic Dinuclear Lanthanide(III) Complexes Containing Nonequivalent Lanthanide Metal Ions: Zero-Field SMM Behavior in the Dysprosium Analogue

Résumé

A series of homometallic dinuclear lanthanide complexes containing nonequivalent lanthanide metal centers [Ln(LH)(LH)(CHOH)(N)]MeOHHO [, Ln = Dy, = 0, = 2; , Ln = Tb, = 1, = 1] have been synthesized [LH = 6-((bis(2-hydroxyethyl)amino)-'-(2-hydroxybenzylidene)picolinohydrazide] and characterized. The dinuclear assembly contains two different types of nine-coordinated lanthanide centers, because the nonequivalent binding of the azide co-ligand as well as the varying coordination of the deprotonated Schiff base ligand. Detailed magnetic studies have been performed on the complexes and . Complex and its diluted analogue () are zero-field SMMs with effective energy barriers () of magnetization reversal equal to 59(3) K and 66(3) K and relaxation times of τ = 10(4) × 10 s and 10(4) × 10 s, respectively. On the other hand, complex shows a field-induced SMM behavior. Combined and density functional theory calculations were performed to explain the experimental findings and to unravel the nature of the magnetic anisotropy, exchange-coupled spectra, and magnetic exchange interactions between the two lanthanide centers.
Fichier principal
Vignette du fichier
Kumar et al - 2021 - Azide-Coordination in Homometallic Dinuclear Lanthanide.pdf (2.92 Mo) Télécharger le fichier
Kumar_ic1c00249_si_001.pdf (2.79 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03282730 , version 1 (15-09-2021)

Identifiants

Citer

Pawan Kumar, Sourav Biswas, Abinash Swain, Joydev Acharya, Vierandra Kumar, et al.. Azide-Coordination in Homometallic Dinuclear Lanthanide(III) Complexes Containing Nonequivalent Lanthanide Metal Ions: Zero-Field SMM Behavior in the Dysprosium Analogue. Inorganic Chemistry, 2021, 60 (12), pp.8530-8545. ⟨10.1021/acs.inorgchem.1c00249⟩. ⟨hal-03282730⟩
31 Consultations
100 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More