Thermodynamic Parameters of the Oxidative Polymerization Catalyzed by Copper-Partially-quaternized Poly(vinylpyridine) Complexes

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  • 銅-部分四級化ポリ(ビニルピリジン)錯体による酸化重合の熱力学パラメーター

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Description

The electrostatic effect of Cu(II)-partially-quaternized po1y(vinylpyridine)(QPVP)catalyst on the oxidative polymerization of 2, 6-xylenol was discussed in terms of the thermodynamic parameters of the catalysis and the shape of the QPVP complex. The intermediate complex is stable in the QPVP system from an ehthalpy point of view (Table 2), and the Cu(1)complex is considered to be relatively stabilized by the strain of the QPVP-chain due to the electrostatic repulsion (Fig.1). Activation entropy of the QPVP catalyst is large, and the larger entropy was observed in the QPVP complex having the more compact structure (Table 2, 3). ln the QPVP-catalyzed oxidation of p-phenylenediamine, the chelate tstructure of the QPVP complex was destroyed by the coordination of the substrate,

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1974 (8), 1565-1568, 1974-08-10

    The Chemical Society of Japan

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