Summary.
From extraction experiments in the two-phase water-nitrobenzene system and γ-activity measurements, the stability constant of protonated tetraethyl p-tert-butyltetrathiacalix[4]arenetetraacetate (cone) in nitrobenzene saturated with water was determined. Three different structures of the resulting complex species were indicated by means of the DFT calculations.
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Dybal, J., Makrlík, E., Vaňura, P. et al. Stability and DFT Calculated Structure of Protonated Tetraethyl p-tert-Butyltetrathiacalix[4]arenetetraacetate in the cone Conformation. Monatsh. Chem. 138, 1239–1242 (2007). https://doi.org/10.1007/s00706-007-0731-1
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DOI: https://doi.org/10.1007/s00706-007-0731-1