Axial ligand substitution reactions of head-to-head α-pyridonato-bridged Pt(III) binuclear complexes bearing various equatorial ligands with chloride ion and olefin

Shintaro Kusuhara, Kaori Kojima, Yota Suzuki, Yuki Morita, Tomoaki Sugaya, Satoshi Iwatsuki, Koji Ishihara, Kazuko Matsumoto

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1 Citation (Scopus)

Abstract

In this study, axial ligand-substitution reactions of head-to-head (HH) α-pyridonato-bridged platinum(III) binuclear complexes bearing equatorial amine ligands (L = MeNH2, EtNH2, and L–L = ethylenediamine (en), and N,N′-dimethylethylenediamine (Me2en)) [(Cl)(NH3)2Pt(μ-α-pyridonato)2Pt(L)2(Cl)]2+ are synthesized, and the axial ligand substitution on these complexes with chloride ions are kinetically investigated in acidic aqueous solution. For these complexes, the formation reactions of the dichloro complexes from the monochloro complexes proceeded through three parallel reaction pathways, in contrast to those for the HH tetraammine amidato-bridged platinum (III) binuclear complexes. The effects of equatorial amine ligands as well as the bridging ligands on the axial ligand substitution are discussed. The reaction of [(H2O)(NH3)2Pt(μ-α-pyridonato)2Pt(en)(OH2)]2+ with p-styrenesulfonate is also kinetically investigated.

Original languageEnglish
Pages (from-to)556-564
Number of pages9
JournalJournal of Molecular Liquids
Volume262
DOIs
Publication statusPublished - 2018 Jul 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

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