Rare "Janus"-faced single-molecule magnet exhibiting intramolecular ferromagnetic interactions.

ABSTRACT: A rare disk-like single-molecule magnet (SMM) exclusively bridged by end-on azides with a spin ground state of S = 14 was prepared by the reaction of a divalent Fe^II precursor with Me₃SiN₃ under basic conditions. AC magnetic susceptibility studies revealed unusual, "Janus"-faced SMM behavior for the dried and pristine forms of the compound attributed to solvation/de-solvation effects of the coordinated MeCN ligands which leads to alterations in the crystal field and symmetry of the metal ions. DFT calculations confirmed the ferromagnetic nature of the interactions between the Fe^II spin carriers with the zero-field splitting parameters D = -0.2323 cm^-1 and E/D = 0.027. The results have important implications

SUBMITTER: Alexandropoulos DI 

PROVIDER: S-EPMC6368239 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature