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Keywords:

  • bioinorganic chemistry;
  • epoxidation;
  • manganese;
  • oxygen;
  • water activation
Thumbnail image of graphical abstract

Water, a powerful ally: A MnIII complex with an N4O-coordinating ligand and a deprotonated water molecule as sixth ligand is chemically oxidized by a CeIV one-electron oxidant. The results indicate catalytic oxygen atom transfer to alkenes, with the oxygen atom originating from a water molecule. These findings demonstrate the possibility of using water as oxygen source to perform the oxidation of organic substrates.