Studies in Nickel(IV) Chemistry. Part 3. Kinetics of Metal(II) Ion-mediated Acid Decomposition of Tris(dimethylglyoximato)-nickelate(IV) in Aqueous Medium

DOI: 10.1039/DT9830001239

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1239 - 1246 (1983)

Update date:2022-08-23

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Authors:

Neogi, Gautam

Acharya, Sridhara

Panda, Rama Krushna

Ramaswamy, Dorai

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Article abstract of DOI:10.1039/DT9830001239

The kinetics of metal(II) ion-mediated acid decomposition of tris(dimethylglyoximato)nickelate(IV), ^2-, with concomitant intramolecular electron transfer to produce and Ni²⁺(aq) have been studied at 35 deg C and ionic strength 0.57 mol dm^-3 in aqueous medium in the range 3.6 IV complex and M^II(aq) (M=Cu, Zn, or Ni) present in the medium.While the rate-determining steps in the reactions with Cu^II are envisaged to involve acid decomposition of the adduct formed in addition to proton-assisted decomposition of the Ni^IV complex, those in the reactions with Zn^II and Ni^II proceed essentially by routes parallel to the proton-assisted decomposition.U.v.-visible spectral changes in the Ni^IV-Cu^II reaction indicate the formation of the 1:1 adduct.

Full text of DOI:10.1039/DT9830001239

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