The conductance of cyclic polyether-cation complexes
The conductance of cyclic polyether-cation complexes
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环状聚醚-阳离子配合物的电导
DOI：
10.1007/bf00651726
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发表时间：
1972
影响因子：
1.2
通讯作者：
E. Cussler
中科院分区：
文献类型：
--
作者：
D. Evans;S. L. Wellington;J. A. Nadis;E. Cussler
精确的电导测量的钠，钾，铯盐在甲醇和乙腈溶液中含有环状聚醚二苯并-18-冠-6和二环己基-18-冠-6。通过非线性最小二乘法分析了在恒定离子强度的溶液中加入环状聚醚引起的当量电导的降低，得到阳离子-聚醚复合物的缔合常数和当量电导。观察到的络合的选择性是一个功能，不仅是离子的大小，但也溶剂。
Precise conductance measurements are reported for sodium, potassium, and cesium salts in methanol and acetonitrile solutions containing cyclic polyethers dibenzo-18-crown-6 and dicyclohexyl-18-crown-6. Decreases in equivalent conductance caused by the addition of a cyclic polyether to solutions of constant ionic strength were analyzed by nonlinear least squares to give association constants and equivalent conductances of the cation-polyether complex. The selectivity observed for the complexing is a function not only of ionic size but also of solvent.