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Slow Magnetic Relaxation in a Lanthanide-[1]Metallocenophane Complex.

Trevor P Latendresse1, Nattamai S Bhuvanesh1, Michael Nippe1

  • 1Department of Chemistry, Texas A&M University , 3255 TAMU, College Station, Texas 77843, United States.

Journal of the American Chemical Society
|June 8, 2017
PubMed
Summary

The first lanthanide metallocenophane complex, [Li(THF)4][DyFc3Li2(THF)2] (1), was synthesized. This complex displays a unique structure and exhibits properties of a soft single-molecule magnet.

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Area of Science:

  • Organometallic Chemistry
  • Lanthanide Chemistry
  • Supramolecular Chemistry

Background:

  • Metallocenophane complexes are typically formed with main group or transition metals.
  • Lanthanide complexes with metallocenophane structures are rare.
  • Single-molecule magnets (SMMs) are of interest for high-density data storage.

Purpose of the Study:

  • To synthesize and characterize the first lanthanide metallocenophane complex.
  • To investigate the structural and magnetic properties of the novel complex.
  • To explore potential applications in molecular magnetism.

Main Methods:

  • Synthesis of the lanthanide metallocenophane complex.
  • X-ray crystallography for structural determination.
  • Magnetic susceptibility measurements to assess SMM behavior.

Main Results:

  • Isolation and structural characterization of [Li(THF)4][DyFc3Li2(THF)2] (1), the first lanthanide metallocenophane.
  • Complex 1 exhibits a distorted trigonal prismatic geometry around the Dy(III) ion.
  • Intramolecular Dy-Fe distances and soft single-molecule magnet characteristics were observed.

Conclusions:

  • The successful synthesis of a lanthanide metallocenophane complex opens new avenues in organometallic chemistry.
  • The unique structural features and magnetic properties of complex 1 highlight the potential of lanthanides in designing novel molecular magnets.
  • This study provides a foundation for further research into lanthanide-based metallocenophanes for advanced magnetic applications.