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用滴定量热计于298.15 K测定了除钷、镥以外的全部十三种镧系(Ⅲ)高氯酸盐与二苯并-18-冠-6在无水乙腈中的配位作用.借助计算机用自编程序算出了配位反应的生成常数和焓变,进而算出了配位反应的自由能变化和熵变化.探讨了镧系(Ⅲ)阳离子对配位反应的影响.此外,还比较了几种不同冠醚与高氯酸镧在无水乙腈中配位反应的热力学性质.
The coordination properties of all thirteen lanthanides (Ⅲ) perchlorates and dibenzo-18-crown-6 in acetonitrile were determined by titration calorimeter at 298.15 K. With the help of The computer calculated the formation constants and enthalpy changes of the coordination reaction by self programming, and then calculated the free energy change and entropy change of the coordination reaction.The effect of the lanthanide (Ⅲ) cation on the coordination reaction was also discussed.In addition, Thermodynamic properties of several different crown ethers and lanthanum perchlorate coordination in anhydrous acetonitrile.