Ligand replacement reactions of oxygen complexes of Cu+dipy2

  • Yu. I. Skurlatov
  • S. O. Travin
  • A. P. Purmal'
Physical Chemistry
  • 26 Downloads

Conclusions

  1. 1.

    By the stopped flow method it has been shown that acetate has no effect on the kinetics of the autoxidation of the dipyridyl complex of copper (I) (Cu+dipy2). Ethylenediaminetetraacetate effectively reacts with the oxygen adduct dipy2Cu+O2, malonic acid reacts with both the adduct and with the partial charge-transfer complex dipy2CuO2+.

     
  2. 2.

    The reaction of the dianion of malonic acid with the partial charge-transfer complex occurs by a mechanism of replacement of the coordinated 2,2′-dipyridyl and is accompanied by reduction of O2 to the Superoxide radical.

     
  3. 3.

    Reaction of polydentate ligands with the adduct also occurs by the mechanism of replacement of 2,2′-dipyridyl. When the adduct reacts with the monoanion of malonic acid, O2 is reduced to HO2. and when it reacts with the dianion O2 is reduced to O2.−.

     
  4. 4.

    The reaction rate constants for replacement of 2,2′-dipyridyl in the complexes dipy2Cu+O2 and dipy2CuO2+ have been determined, as well as the absolute values of the reaction rate constants of HO2 with Cu+dipy2 and Cu2+dipy2.

     

Keywords

Oxygen Copper Acetate Superoxide Adduct 

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Literature cited

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Copyright information

© Plenum Publishing Corporation 1980

Authors and Affiliations

  • Yu. I. Skurlatov
    • 1
  • S. O. Travin
    • 1
  • A. P. Purmal'
    • 1
  1. 1.Institute of Chemical PhysicsAcademy of Sciences of the USSRMoscow

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