Binuclear Oxidovanadium(IV) Complex with the Bridging Chloranilate Ligand: Synthesis and Magnetic Properties

I. S. Fomenko, V. A. Nadolinnyi, N. N. Efimov, V. V. Kokovkin, A. L. Gushchin

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Abstract: The binuclear oxidovanadium(IV) complex [VO(Dbbpy)Cl(Ca)Cl(Dbbpy)VO] (I) is synthesized by the reaction of [VO(Dbbpy)(H2O)Cl2] (Dbbpy is 4,4'-di-tert-butyl-2,2'-bipyridyl) with chloranilic acid H2Ca in acetonitrile in the presence of Et3N in a yield of 79%. Complex I is reduced at Е1/2 = –842 mV (vs. Ag/AgCl), which is shown by cyclic voltammetry for a solid sample using the paste electrode. The EPR spectra and magnetochemical measurements for complex I confirm the existence of two paramagnetic vanadium(IV) centers with the total spin S = 1 and the antiferromagnetic character of the exchange interaction between the centers.

Original languageEnglish
Pages (from-to)776-781
Number of pages6
JournalRussian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
Volume45
Issue number11
DOIs
Publication statusPublished - 1 Nov 2019

Keywords

  • chloranilic acid
  • EPR spectroscopy
  • magnetic susceptibility
  • oxidovanadium(IV)
  • voltammetry
  • ELECTROCHEMISTRY
  • NITROGENASE
  • ACID
  • CRYSTAL-STRUCTURE
  • VANADIUM COMPLEXES
  • OXIDATIVE BROMINATION
  • HYDROGEN-PEROXIDE
  • CATALYTIC-ACTIVITY
  • DERIVATIVES
  • OXOVANADIUM(IV) COMPLEXES

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