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本文用量热滴定法测定了醚型、酯型双(12-冠-4)与钠离子,醚型双(15-冠-5)与钾、铊离子在8∶2甲醇-水溶液中,25℃时配位作用的热力学性质.实验结果表明,所有的双冠醚均与阳离子形成了夹心型配位化合物,并与带臂冠醚和母体冠醚的实验结果作了比较.从热力学的观点,讨论了双冠醚的桥联结构对稳定性的影响.
In this paper, the thermal titration method was used to determine the molar ratio of ether type, ester type bis (12-crown-4) and sodium ion, ether type bis (15-crown-5) and potassium and thallium ions in 8: 2 methanol- The results show that all of the double crown ethers and the cations form a sandwich-type complex and are compared with the experimental results of the crown ethers and the crown ethers.From the thermodynamic point of view, The effect of bridging structure of bis-crown ether on stability was discussed.