A Coordination Network with Ligand-Centered Redox Activity Based on facial-[CrIII(2-mercaptophenolato)3]3− Metalloligands

Masanori Wakizaka, Takeshi Matsumoto, Atsushi Kobayashi, Masako Kato, Ho Chol Chang

Research output: Contribution to journalArticlepeer-review

Abstract

The design of redox-active metal–organic frameworks and coordination networks (CNs), which exhibit metal- and/or ligand-centered redox activity, has recently received increased attention. In this study, the redox-active metalloligand (RML) [Me4N]3fac-[CrIII(mp)3] (1) (mp=2-mercaptophenolato) was synthesized and characterized by single-crystal X-ray diffraction analysis, and its reversible ligand-centered one-electron oxidation was examined by cyclic voltammetry and spectroelectrochemical measurements. Since complex 1 contains O/S coordination sites in three directions, complexation with K+ ions led to the formation of the two-dimensional honeycomb sheet-structured [K3fac-{CrIII(mp)3}(H2O)6]n (2⋅6 H2O), which is the first example of a redox-active CN constructed from a RML with o-disubstituted benzene ligands. Herein, we unambiguously demonstrate the ligand-centered redox activity of the RML within the CN 2⋅6 H2O in the solid state.

Original languageEnglish
Pages (from-to)9919-9925
Number of pages7
JournalChemistry - A European Journal
Volume23
Issue number41
DOIs
Publication statusPublished - 2017 Jul 21
Externally publishedYes

Keywords

  • anions
  • coordination network
  • mercaptophenolato ligand
  • metalloligand
  • redox chemistry

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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