4.7 Article

Solvent-Induced Redox Isomerism of Cobalt Complexes with Redox-Active Bisguanidine Ligands

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INORGANIC CHEMISTRY
卷 61, 期 22, 页码 8440-8454

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AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.1c03983

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  1. German research foundation (DFG)
  2. state of Baden-Wurttemberg through bwHPC
  3. German Research Foundation (DFG) [INST 40/575-1 FUGG]

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This study investigates the redox properties of cobalt complexes with redox-active bisguanidine ligands, and fine-tuning of the electronic structure is achieved through systematic modifications at the ligand units. The first observation of redox isomerism for cobalt complexes with redox-active guanidine ligands is reported.
Redox-isomeric coordination compounds, in which the magnetic and optical properties could be varied by a stimulated intramolecular electron transfer between the metal and a redoxactive ligand, are of interest for several applications in catalysis and materials science. In this work, the redox chemistry of cobalt complexes with redox-active bisguanidine ligands is studied; systematic modifications at the redox-active bisguanidine and the co-ligand units allow for fine-tuning of the electronic structure, which eventually leads to the first observation of redox isomerism for cobalt complexes with redox-active guanidine ligands. Redox isomerism is triggered by a change in the solvent properties.

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