Isomeric ligands enhance the anisotropy barrier within nine-coordinated {Dy₂} compounds

Abstract

Two nine-coordinated Dy2 compounds (1 and 2) were obtained on the basis of isomeric ligands. Magnetic studies revealed that compound 2 possesses higher Ueff in nine-coordinated Dy2 compounds.

Magnetic Nature of the CrIII–LnIII Interactions in [CrIII2LnIII3] Clusters with Slow Magnetic Relaxation

“…Since the first discovery of Mn 12 SMM, coordination clusters containing Mn III ions are the richest family of SMMs, owing to its favorable Ising anisotropy; however, SMMs with other 3 d ions have been successfully isolated, such as Fe III , Co II , and Ni II , all of which possess anisotropic characteristics. In 2003, a Tb III complex displayed SMM behavior, opening the upsurge in searching for lanthanide‐based SMMs; since then, plenty of lanthanide‐based SMMs have been reported, proving that lanthanide ions are good candidates to construct SMMs, owing to their large magnetic moments and anisotropy …”

Magnetism‐Structures Relationship of 3,5‐Heptanedione Dy(III) SMMs Based on the Nitrogen‐Containing Auxiliary Ligand

“…Among the known SMMs, lanthanide complexes have attracted extensive attentions attributed to the lanthanide ions’ large unquenched orbital angular momentum resulting in the significant magnetic anisotropy, especially for the Dy(III) ion. Among the lanthanide SMMs, Dy(III) ion SMMs have been focused because of Dy(III) ion with unparalleled single‐ion anisotropy and the spin parity effect for a Kramers ion (odd number of 4 f electrons) . It was reported that the magnetic anisotropy of dysprosium ions is strongly influenced by the ligand field.…”

New field-induced single ion magnets based on prolate Er(iii) and Yb(iii) ions: tuning the energy barrierUeffby the choice of counterions within an N3-tridentate Schiff-base scaffold

“…38 At the same time, the aid of ab initio calculations 26,[39][40][41][42][43][44] has become indispensable to further advance the field of molecular magnetism. It was shown that fine-tuning of the ligand environment [45][46][47][48][49] is indeed possible. However, the resulting SMM properties arise due to a subtle interplay between the ligands' electrostatic potential [49][50][51][52] and the molecular symmetry [53][54][55][56][57][58] of the species under study.…”

“…It was shown that fine-tuning of the ligand environment [45][46][47][48][49] is indeed possible. However, the resulting SMM properties arise due to a subtle interplay between the ligands' electrostatic potential [49][50][51][52] and the molecular symmetry [53][54][55][56][57][58] of the species under study. Tang and co-workers demonstrated for instance, that one may significantly modulate the relaxation behavior in Dy(III)-based SIMs via counterions and cis-trans isomerism in a pseudo D 4d coordination environment.…”