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Issue 7, 1983
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Conductance stopped-flow study of the complexation reaction of poly(4-vinylpyridine) with nickel(II) ions

Tsuneo Okubo  and  Akira Enokida 

Abstract

The equilibrium and kinetic parameters of Ni2+ complexation with poly(4-vinylpyridine)(PVP) have been estimated using the conductance stopped-flow (κ-SF) technique in a mixture of methanol + water (55/45 vol%). Coordination of four pyridine ligands of the polymer with Ni2+ are assumed in the analysis. Relaxation traces of the κ-SF measurements were obtained by mixing Ni2+ and PVP solutions. The complexation and dissociation rate constants of unprotonated ligands of PVP with Ni2+ are 4500 dm3 mol–1 s–1 and 6.6 s–1, being close to those of the low-molecular-weight ligands, e.g. imidazole. The complexation rate of monoprotonated polymer ligands is very small (ca. 10 dm3 mol–1 s–1).

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Article type: Paper
DOI: 10.1039/F19837901639
Citation: J. Chem. Soc., Faraday Trans. 1, 1983,79, 1639-1648
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    Conductance stopped-flow study of the complexation reaction of poly(4-vinylpyridine) with nickel(II) ions

    T. Okubo and A. Enokida, J. Chem. Soc., Faraday Trans. 1, 1983, 79, 1639
    DOI: 10.1039/F19837901639

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