Highly cooperative ion-pair recognition of potassium cyanide using a heteroditopic ferrocene-based crown ether-trifluoroacetylcarboxanilide receptor.
A heteroditopic receptor having crown ether and trifluoroacetylcarboxanilide groups selectively recognizes both potassium and cyanide ions in acetonitrile with an association constant of as high as Ka = 1.9 x 10(7) M(-1) through a highly cooperative ion-pair interaction, resulting in two orders of magnitude enhancement in the binding affinity.
Miyaji
Hidekazu
H
Department of Chemistry and Center for Integrated Molecular Systems, POSTECH, San 31, Hyoja-dong, Pohang, 790-784, Republic of Korea.
Kim
Dae-Sik
DS
Chang
Byoung-Yong
BY
Park
Eunju
E
Park
Su-Moon
SM
Ahn
Kyo Han
KH
D000813:Anilides / Q000737:chemistry; D001665:Binding Sites; D002264:Carboxylic Acids / Q000032:analysis*; D043844:Crown Ethers / Q000737:chemistry*; D005296:Ferrous Compounds / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D000075163:Metallocenes; D015394:Molecular Structure; D011190:Potassium Cyanide / Q000032:analysis / Q000737:chemistry*; D014269:Trifluoroacetic Acid / Q000737:chemistry*
D000813:Anilides; D002264:Carboxylic Acids; D043844:Crown Ethers; D005296:Ferrous Compounds; D000075163:Metallocenes; D014269:Trifluoroacetic Acid; D011190:Potassium Cyanide; C004998:ferrocene