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<p>The formation of binuclear complexes of bis(18-crown-6)stilbene with Ho<sup>III</sup> ions in anhydrous MeCN was studied by spectrophotometry and NMR spectroscopy. The quantum yields of the reversible <i>E</i>—<i>Z</i> photoisomerization of the complex under study were measured. The changes in the molar magnetic susceptibility of the binuclear complex caused by <i>E</i>—<i>Z</i> photoisomerization in solution at room temperature were demonstrated by the Evans method. The distances between the paramagnetic Ho<sup>III</sup> ions in the complexes of <i>E</i> and <i>Z</i> isomers of bis(18-crown-6)stilbene were evaluated by density functional theory calculations.</p>

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Photoswitchable magnetic susceptibility: complexes of bis(18-crown-6)stilbene with holmium(iii) ions

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • T. P. Martyanov,
  • E. N. Ushakov,
  • S. G. Vasil’ev,
  • A. P. Vorozhtsov,
  • E. G. Martyanova,
  • L. S. Klimenko,
  • S. P. Gromov

摘要

The formation of binuclear complexes of bis(18-crown-6)stilbene with HoIII ions in anhydrous MeCN was studied by spectrophotometry and NMR spectroscopy. The quantum yields of the reversible E—Z photoisomerization of the complex under study were measured. The changes in the molar magnetic susceptibility of the binuclear complex caused by E—Z photoisomerization in solution at room temperature were demonstrated by the Evans method. The distances between the paramagnetic HoIII ions in the complexes of E and Z isomers of bis(18-crown-6)stilbene were evaluated by density functional theory calculations.