Abstract
From extraction experiments in the two-phase water–nitrobenzene system and γ-activity measurements, the stability constants of the tetraethyl p-tert-butyltetrathiacalix[4]arene tetraacetate (cone)·M+ complexes (M+ = Li+, H3O+, NH4 +, Ag+, or K+) were determined in water-saturated nitrobenzene. It was found that these constants increase in the cation order NH4 + < K+ < H3O+ < Ag+ < Li+ < Na+.
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Acknowledgments
This work was supported by the Czech Ministry of Education, Youth, and Sports, projects MSM 4977751303 and MSM 6046137307, and by the Specific Research of the Faculty of Applied Sciences, University of West Bohemia, Pilsen, Czech Republic.
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Makrlík, E., Vaňura, P., Budka, J. et al. Stability constants of the Li+, Na+, H3O+, NH4 +, Ag+, and K+ complexes of the cone conformer of tetraethyl p-tert-butyltetrathiacalix[4]arene tetraacetate in nitrobenzene saturated with water. Monatsh Chem 141, 31–33 (2010). https://doi.org/10.1007/s00706-009-0216-5
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DOI: https://doi.org/10.1007/s00706-009-0216-5