Geometric isomerism and redox properties of ruthenium(II/III) complexes with 3-hydroxypicolinamide

Ryoji Mitsuhashi, Takayoshi Suzuki, Masahiro Mikuriya

Research output: Contribution to journalArticlepeer-review


Two geometric isomers of [RuCl2(PPh3)2(O-N)]-type complex were prepared and characterized by X-ray crystallography (PPh3 = triphenylphosphine, O-N = Hpia/pia-, Hpia = 3-hydroxypicolinamide). The electrochemical properties of the complexes upon protonation/deprotonation were investigated. The redox potential of the Ru center was remarkably shifted by isomerization. The UV-vis and electrochemical measurements suggested that slow isomerization from trans(P,Cl),trans(P,N) geometry to trans(P,P) geometry induced the oxidation and deprotonation of the complex.

Original languageEnglish
Pages (from-to)479-482
Number of pages4
JournalChemistry Letters
Issue number4
Publication statusPublished - 2018


  • Geometric isomerism
  • Redox potential shift
  • Ru(II/III) complex

ASJC Scopus subject areas

  • Chemistry(all)


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