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Abstract <p>The reaction of cobalt tetrafluoroborate hexahydrate with 2,2'-bipyridine (Bpy) and diphenylphosphinic acid (Ph<sub>2</sub>P(O)OH) gave a new binuclear cobalt(II) complex [Co<sub>2</sub>(µ-O<sub>2</sub>PPh<sub>2</sub>)<sub>2</sub>(Bpy)<sub>4</sub>](BF<sub>4</sub>)<sub>2</sub> featuring a sterically demanding bridging ligand. The complex was characterized by various physicochemical methods, and the crystal structure of the complex was determined by X-ray diffraction. Analysis of the X-ray diffraction structure of the complex showed that the cobalt ions have a distorted octahedral coordination and are linked by bridges through two {µ-O<sub>2</sub>PPh<sub>2</sub>} moieties. The data of ESR spectroscopy and magnetochemical measurements indicate the presence of a weak antiferromagnetic interaction between the cobalt ions in the molecule.</p>

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Synthesis, Structure, and Magnetic Properties of the Binuclear Cobalt Complex [Co2(μ‑O2PPh2)2(Bpy)4](BF4)2

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • A. A. Kagilev,
  • Z. N. Gafurov,
  • I. K. Mikhailov,
  • I. F. Sakhapov,
  • A. O. Kantyukov,
  • A. B. Dobrynin,
  • V. I. Morozov,
  • R. B. Zaripov,
  • A. S. Bogomyakov,
  • O. B. Babaeva,
  • O. G. Sinyashin,
  • D. G. Yakhvarov

摘要

Abstract

The reaction of cobalt tetrafluoroborate hexahydrate with 2,2'-bipyridine (Bpy) and diphenylphosphinic acid (Ph2P(O)OH) gave a new binuclear cobalt(II) complex [Co2(µ-O2PPh2)2(Bpy)4](BF4)2 featuring a sterically demanding bridging ligand. The complex was characterized by various physicochemical methods, and the crystal structure of the complex was determined by X-ray diffraction. Analysis of the X-ray diffraction structure of the complex showed that the cobalt ions have a distorted octahedral coordination and are linked by bridges through two {µ-O2PPh2} moieties. The data of ESR spectroscopy and magnetochemical measurements indicate the presence of a weak antiferromagnetic interaction between the cobalt ions in the molecule.