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Science 25 April 1969:
Vol. 164. no. 3878, pp. 443 - 444
DOI: 10.1126/science.164.3878.443
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Articles

Binding of Alkali Metal Ions by Cyclic Polyethers: Significance in Ion Transport Processes

Reed M. Izatt 1, J. Howard Rytting 1, Dennis P. Nelson 1, Barry L. Haymore 1, and James J. Christensen 1

1 Departments of Chemistry and Chemical Engineering, Brigham Young University, Provo, Utah 84601

Values for the formation constant (log K), the change in enthalpy (utriH°), and the change in entropy (utriS°) 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[20.4.0.09,14] 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.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Cyclic polyether-protonated organic amine binding: significance in enzymatic and ion transport processes.
R. Izatt, N. Izatt, B. Rossiter, J. Christensen, and B. Haymore (1978)
Science 199, 994-996
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Host-Guest Chemistry: Complexes between organic compounds simulate the substrate selectivity of enzymes.
D. J. Cram and J. M. Cram (1974)
Science 183, 803-809
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Ion Binding by Synthetic Macrocyclic Compounds.
J. J. Christensen, J. O. Hill, and R. M. Izatt (1971)
Science 174, 459-467
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Science. ISSN 0036-8075 (print), 1095-9203 (online)