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Abstract <p>New nickel(II) bis-<i>o</i>-iminobenzosemiquinolate complexes (L<sup>1</sup>)<sub>2</sub>Ni (<b>I</b>) and (L<sup>2</sup>)<sub>2</sub>Ni (<b>II</b>) were prepared by template synthesis using <i>o</i>- and <i>m</i>-phenylenediamine compounds with NiCl<sub>2</sub> ((<i>o</i>-PDA)<sub>2</sub>NiCl<sub>2</sub> and (<i>m</i>-PDA)<sub>2</sub>NiCl<sub>2</sub>) as precursors in the reaction with thallium(I) 3,5-di-<i>tert</i>-butyl-<i>o</i>-benzosemiquinolate. The <i>o</i>-phenylenediamine complex with ZnI<sub>2</sub> ((<i>o</i>-PDA)ZnI<sub>2</sub>) was allowed to react with 4-(<i>tert</i>-butyl)-5-methoxy-<i>o</i>-benzoquinone to give L<sup>3</sup>ZnI<sub>2</sub> (<b>III</b>) containing a neutrally coordinated molecule of new <i>o</i>-iminobenzoquinone. It was shown that the condensation of <i>o</i>(<i>m</i>)-phenylenediamine with <i>o</i>-benzosemiquinone/<i>o</i>-benzoquinone takes place in the coordination sphere of nickel(II) and zinc(II) ions, giving rise to new <i>o</i>-iminobenzosemiquinolate/<i>o</i>-iminobenzoquinone ligands functionalized with an amino group. The structure of complexes <b>I</b> and <b>III</b> was confirmed by X-ray diffraction.</p>

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Template Synthesis of Functionalized o-Iminosemiquinones and o-Iminoquinones in the Coordination Sphere of Nickel(II) and Zinc(II) Ions

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • N. O. Druzhkov,
  • T. N. Kocherova,
  • I. N. Meshcheryakova,
  • A. V. Cherkasov,
  • I. A. Yakushev,
  • S. V. Baryshnikova,
  • P. V. Dorovatovskii,
  • A. V. Piskunov

摘要

Abstract

New nickel(II) bis-o-iminobenzosemiquinolate complexes (L1)2Ni (I) and (L2)2Ni (II) were prepared by template synthesis using o- and m-phenylenediamine compounds with NiCl2 ((o-PDA)2NiCl2 and (m-PDA)2NiCl2) as precursors in the reaction with thallium(I) 3,5-di-tert-butyl-o-benzosemiquinolate. The o-phenylenediamine complex with ZnI2 ((o-PDA)ZnI2) was allowed to react with 4-(tert-butyl)-5-methoxy-o-benzoquinone to give L3ZnI2 (III) containing a neutrally coordinated molecule of new o-iminobenzoquinone. It was shown that the condensation of o(m)-phenylenediamine with o-benzosemiquinone/o-benzoquinone takes place in the coordination sphere of nickel(II) and zinc(II) ions, giving rise to new o-iminobenzosemiquinolate/o-iminobenzoquinone ligands functionalized with an amino group. The structure of complexes I and III was confirmed by X-ray diffraction.