Formation of Defect-Dicubane-Type Ni^II ₂Ln^III ₂ (Ln = Tb, Er) Clusters: Crystal Structures and Modeling of the Magnetic Properties.

ABSTRACT: In the field of molecular nanoclusters, cubane and defect-dicubane, or butterfly structures, are typical examples of tetranuclear metal core architectures. In this work, a halogenated and anionic Schiff-base ligand (L^2-) is utilized as it is predisposed to chelate within a cluster core to both 3d and 4f metal ions, in different binding configurations (H₂L = 4-chloro-2-(2-hydroxy-3-methoxybenzyliden amino)phenol). The phenolate oxygen atoms of the deprotonated ligand can act in μ-O and μ₃-O bridging binding modes for the intramolecular assembly of metal ions. Based on that, two tetranuclear and isostructural compounds [Ni₂Tb₂(L)₄(NO₃)₂(DMF)₂]·2CH₃CN (1) and [Ni₂Er<

SUBMITTER: You Z 

PROVIDER: S-EPMC7807793 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature