Electrochemical Data of the Vinyl Complexes

August 16, 2024

• Title:       

  Electrochemical Data of the Vinyl Complexes

• Image Source:

  Ruthenium complexes with vinyl, styryl, and vinylpyrenyl ligands: A case of non-innocence in organometallic chemistry

• Mark:

  Table 1

• Associated context:

  A comparison of the data in Table 1 reveals the following trends: (i) Extending the vinyl ligand’s π-system from hexenyl to styryl and to 1-pyrenylvinyl shifts the oxidation potentials of both processes to more cathodic values. (ii) The effect of  extending the vinyl ligand’s π-system is much larger for the second oxidation. (iii) Within each series of compounds 1a-c, 2a-c, and 3a-c the first oxidation potentials follow the order five-coordinate Pr3 (1c, 2c, 3c) < five-coordinate PPh3 (1a,  
  2a, 3a) ≈ six-coordinate isonicotinate adducts (1b, 2b, 3b).