Non-innocent Ligand - Typical Ligands That Often Behave As Redox Non-Innocent Ligands

Typical Ligands That Often Behave As Redox Non-Innocent Ligands

  • O2 and NO.

Ligands with extended pi-delocalization such as porphyrins and phthalocyanines, ligands with the generalised formulas 2- or D=CR-CR=D (D = O, S, NR’ and R, R' = alkyl or aryl), and similar related systems are often non-innocent. For example:

  • dioxalenes, such as catecholates.
  • dithiolenes, such as 1,2-maleonitriledithiolate
  • diimines such as derivatives of 1,2-diaminobenzene, α-diimines, and dimethylglyoxime.
  • pyridine-2,6-diimine ligands (relevant in polymerisation and hydrogenation catalysis).

The pyridine-2,6-diimine ligand can be easily reduced by one or two electrons.

Read more about this topic:  Non-innocent Ligand

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