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Related Experiment Video

Updated: May 2, 2026

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Equatorially coordinated lanthanide single ion magnets.

Peng Zhang1, Li Zhang, Chao Wang

  • 1State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, P. R. China.

Journal of the American Chemical Society
|March 15, 2014
PubMed
Summary
This summary is machine-generated.

Researchers explored magnetic relaxation in low-coordinate Dysprosium(III) and Erbium(III) complexes. A novel three-coordinate Erbium(III) complex was identified as the first mononuclear single-molecule magnet with equatorial coordination.

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Area of Science:

  • Coordination Chemistry
  • Magnetism
  • Materials Science

Background:

  • Low-coordinate lanthanide complexes are crucial for developing single-molecule magnets (SMMs).
  • Understanding magnetic relaxation dynamics is key to designing efficient SMMs.
  • Equatorial coordination in mononuclear lanthanide SMMs remains underexplored.

Purpose of the Study:

  • To investigate the magnetic relaxation dynamics of low-coordinate Dy(III) and Er(III) complexes.
  • To synthesize and characterize three-coordinate and five-coordinate complexes with triangular and trigonal bipyramidal geometries.
  • To demonstrate the potential of simple models in directing the design of 4f-element-based SMMs.

Main Methods:

  • Synthesis and structural characterization of Dy(III) and Er(III) complexes.
  • Magnetic susceptibility measurements to study magnetic relaxation dynamics.
  • Computational modeling to understand magnetic properties.

Main Results:

  • The magnetic relaxation dynamics of three-coordinate triangular and five-coordinate trigonal bipyramidal Dy(III) and Er(III) complexes were studied for the first time.
  • A three-coordinate Er(III) complex was identified as the first mononuclear SMM with equatorial coordination.
  • The results validate the effectiveness of simple models in designing 4f-element-based SMMs.

Conclusions:

  • Low-coordinate lanthanide complexes exhibit unique magnetic relaxation dynamics.
  • The first equatorially coordinated mononuclear Er(III)-based SMM was developed, highlighting a promising design strategy.
  • This work provides valuable insights for the rational design of novel single-molecule magnets.