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Title: Rare “Janus”-faced single-molecule magnet exhibiting intramolecular ferromagnetic interactions
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 Me 3 SiN 3 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 for the future study of single-molecule magnets incorporating volatile solvent molecules in the first coordination sphere of the metal ions and their effect on the relaxation dynamics.  more » « less
Award ID(s):
1808779
PAR ID:
10108545
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Chemical Science
Volume:
10
Issue:
6
ISSN:
2041-6520
Page Range / eLocation ID:
1626 to 1633
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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