| 镉(Ⅱ)、汞(Ⅱ)离子催化四苯基卟啉锌(Ⅱ)的生成反应动力学研究 |
| THE KINETICS OF FORMATION REACTION OF TETRAPHENYLPORPHYRINATOZINC (Ⅱ) IN THE PRESENCE OF CADMIUM (Ⅱ) AND MERCURY (Ⅱ) ION |
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| 摘要: 在二甲基甲酰胺和水混合溶剂中及在大阳离子M(Ⅱ)(M(Ⅱ)=Cd(Ⅱ)、Hg(Ⅱ))的催化下，用分光光度法研究了四苯基卟啉锌Zn(Ⅱ)TPP的生成反应动力学，提出了反应机理：M(Ⅱ)+H2TPP K2 M(Ⅱ)*H2TPP M(Ⅱ)*H2TPP+Zn(Ⅱ) k3 Zn(Ⅱ)TPP+M(Ⅱ)+2H+;Zn(Ⅱ)+H2TPP < |
| 关键词: 四苯基卟啉 四苯基卟啉锌(Ⅱ) 生成反应动力学 反应机理 镉(Ⅱ)、汞(Ⅱ)离子催化作用 |
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| Abstract: Kinetics of formation reaction of tetraphenylporphyrinatozinc (Ⅱ) in mixture of DMF and H2O has been studied spectrophotometrically in the presence of large cation M(Ⅱ) (M(Ⅱ)=cadmium (Ⅱ) and mercury (Ⅱ) ion). The mechanisms of reaction were proposed. M(Ⅱ)+H2TPP←→M*H2TPP K2; M*H2TPP+Zn(Ⅱ)→Zn(Ⅱ)TPP+M(Ⅱ)+2H+ k3; Zn(Ⅱ)+H2TPP←→Zn*H2TPP K1; Zn*H2TPP→Zn(Ⅱ)TPP+2H+ k1; Zn*H2TPP+Zn(Ⅱ)←→Zn(Ⅱ)TPP+Zn(Ⅱ)+2H+ k2. The effect of temperature on the reaction has been investigated. The standard molar enthalpy change ΔrHm0 and standard molar entropy change ΔrS0m of preequilibrium step and the activation parameters Δ≠Hm, Δ≠Sm of elementary step have been calculated. |
| Keywords: tetraphenylporphyrin tetraphenylporphyrinatozinc (Ⅱ) kinetics of formation reaction mechanism of reaction catalysis of Cd(Ⅱ) and Hg(Ⅱ) ion |
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| 陈正华,朱志昂,陈红卫,张智慧,阮文娟,陈荣悌.镉(Ⅱ)、汞(Ⅱ)离子催化四苯基卟啉锌(Ⅱ)的生成反应动力学研究[J].无机化学学报,1998,14(1):40-46. |
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