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<p>A series of heterometallic carboxylate complexes [Co<sub>2</sub>Ln(NO<sub>3</sub>)(piv)<sub>6</sub>(bpy)<sub>2</sub>] (Ln = La (<b>1</b>), Eu (<b>2</b>), Gd (<b>3</b>); piv is pivalate-anion, bpy is 2,2′-bipyridine) was synthesized and characterized by means of single crystal as well as powder X-ray diffraction. Compounds <b>1</b> and <b>2</b> are field-induced single molecule magnets in which slow magnetic relaxation mainly attributed to the Raman and quantum tunneling of the magnetization (for <b>1</b>) or Raman and direct (for <b>2</b>) mechanisms which is typical for five-coordinated Co(II) ions. Compound <b>3</b> does not show single molecule magnet behavior.</p> Graphical Abstract <p></p>

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Field-induced Single Molecule Magnets Based on Heterometallic Pivalate Complexes [Co2Ln(NO3)(piv)6(bpy)2] (Ln = La, Eu, Gd)

  • 期刊论文

  • 发表日期：

    2025年10月25日

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  • Irina K. Rubtsova,
  • Konstantin A. Babeshkin,
  • Julia K. Voronina,
  • Maxim A. Shmelev,
  • Alexander S. Goloveshkin,
  • Nikolay N. Efimov,
  • Stanislav A. Nikolaevskii,
  • Mikhail A. Kiskin,
  • Igor L. Eremenko

摘要

A series of heterometallic carboxylate complexes [Co2Ln(NO3)(piv)6(bpy)2] (Ln = La (1), Eu (2), Gd (3); piv is pivalate-anion, bpy is 2,2′-bipyridine) was synthesized and characterized by means of single crystal as well as powder X-ray diffraction. Compounds 1 and 2 are field-induced single molecule magnets in which slow magnetic relaxation mainly attributed to the Raman and quantum tunneling of the magnetization (for 1) or Raman and direct (for 2) mechanisms which is typical for five-coordinated Co(II) ions. Compound 3 does not show single molecule magnet behavior.

Graphical Abstract