A Rational Approach to Selective Recognition of NH4+ over K+

Autor:	Jinho Oh, Jik Chin, Su-Moon Park, Brent R. Stranix, Hyun Jei Chung, Christian Walsdorff, Kimoon Kim
Rok vydání:	1999
Předmět:	Hydrogen bond Inorganic chemistry Imine Nonactin General Chemistry Catalysis Ion Metal Crystallography chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Qualitative inorganic analysis Selectivity Benzene
Zdroj:	Angewandte Chemie International Edition. 38:2756-2759
ISSN:	1521-3773 1433-7851
DOI:	10.1002/(sici)1521-3773(19990917)38:18<2756::aid-anie2756>3.0.co;2-6
Popis:	An ion-selective electrode (ISE) based on receptor 1 is highly selective for binding NH(4)(+) over K(+) (lg K(NH(4)(+)/K(+))=-2.6); the three imine nitrogen atoms in 1 are ideally positioned for hydrogen bonding with the tetrahedral NH(4)(+) ion. This selectivity is considerably greater than that found for commercial ISEs based on nonactin (lg K(NH(4)(+)/K(+))=-1.0).
Databáze:	OpenAIRE
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