Interplay between anisotropy and magnetic exchange to modulate the magnetic relaxation behaviours of phenoxo bridged Dy₂dimers with axial β-diketonate co-ligands

Abstract

A series of Schiff base LH ((E)-2-((pyridin-2-ylmethylene)amino)phenol) supported phenoxo bridged symmetric [Dy2(L)2(hfac)4] (1), [Dy2(L)2(tfac)4] (2) and asymmetric [Dy2(L)2(thd)3(NO3)]·1.5H2O (3) binuclear complexes were isolated using diffrently substituted β-diketonate co-ligands (Hhfac =...

Ferromagnetically coupled CoII2LnIII2 complexes (where LnIII = Ho, Er, Yb): experimental and theoretical investigations

“…54,55 BS-DFT calculations have been routinely used to study the magnetic exchange interaction for 3d–4f and 4f–4f complexes. 56–61 For our calculations, the anisotropic centers of Ho III and Yb III in complexes 1 and 3 were substituted with the isotropic counterpart of Gd III . The details of calculations are provided in the ESI †.…”

Tetranuclear CoII4O4 Cubane Complex: Effective Catalyst Toward Electrochemical Water Oxidation

“…Some major difficulty in synthetic chemistry is creating a ligand that is suitable to bind with multiple metal ions through their coordination sites to create a polynuclear entity . To meet this challenge, researchers have employed polydentate Schiff base ligands. , These ligands possess multiple coordination sites and flexible coordination arms, which allow them to coordinate with different metal ions. , Additionally, their oxygen donors can form short bridges between metal ions, providing a suitable structure for diverse topologies in polynuclear clusters. , …”

“…97,98 These ligands possess multiple coordination sites and flexible coordination arms, which allow them to coordinate with different metal ions. 99,100 Additionally, their oxygen donors can form short bridges between metal ions, providing a suitable structure for diverse topologies in polynuclear clusters. 101,102 Most of these molecules contain water-insoluble ligands, which typically makes them suitable for heterogeneous electrocatalysis since they can adsorb on the electrode surface for catalysis in aqueous media.…”

Structures and Single-Molecule Magnet Behavior of Dy3 and Dy4 Clusters Constructed by Different Dysprosium(III) Salts

“…Moreover, the O atom bridges with the metal ions, whereas the N atom has a regulating effect on the ligand field strength; thus, the Schiff base ligand is an excellent choice for synthesizing SMMs. 27,28 For the same ligand, complex formation with different nuclear numbers in a rationally regulated coordination environment is extremely interesting and important for additional study of the magneto-structural correlations of multinuclear SMMs. 29−32 Herein, we selected N′-(2-hydroxybenzoyl)pyrazine-2-carbohydrazonamide (H 2 L-pyra) as the ligand and synthesized trinuclear complex 1 ([Dy 3 (HL-pyra) 2 (L-pyra) 2 (CH 3 COO) 3 ]• 2H 2 O).…”

“…Indeed, Schiff base ligands behave as O- and N-multidentate ligands that can readily form many types of coordination pockets to coordinate with Dy III ions. Moreover, the O atom bridges with the metal ions, whereas the N atom has a regulating effect on the ligand field strength; thus, the Schiff base ligand is an excellent choice for synthesizing SMMs. , For the same ligand, complex formation with different nuclear numbers in a rationally regulated coordination environment is extremely interesting and important for additional study of the magneto-structural correlations of multinuclear SMMs. − …”