环状聚醚对碱金属离子的结合：在离子传输过程中的意义。

Binding of alkali metal ions by cyclic polyethers: significance in ion transport processes.

作者信息

Izatt R M, Rytting J H, Nelson D P, Haymore B L, Christensen J J

出版信息

Science. 1969 Apr 25;164(3878):443-4. doi: 10.1126/science.164.3878.443.

DOI:10.1126/science.164.3878.443

Abstract

Values for the formation constant (log K), the change in enthalpy (triangle upH degrees ), and the change in entropy (triangle upS degrees ) have been determined for the interaction of lithium, sodium, potassium, rubidium, and cesium ions with the two isomers of the cyclic polyether, 2,5,8,15,18,21-hexaoxatricyclo[20.4.0.0(9,14)] hexacosane. The stability order of these metal ions with either isomer is identical to the permeability order for these same metal ions with the structurally related antibiotics, valinomycin and monactin.

摘要

已测定锂、钠、钾、铷和铯离子与环状聚醚2,5,8,15,18,21 - 六氧杂三环[20.4.0.0(9,14)]二十六烷的两种异构体相互作用的生成常数（log K）、焓变（△H°）和熵变（△S°）值。这些金属离子与任何一种异构体的稳定性顺序与这些相同金属离子与结构相关抗生素缬氨霉素和莫能菌素的渗透顺序相同。