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Items for "calixarene compound"

A Combined Experimental and Theoretical Study on the Complexation of H3O+ with Hexaethyl Calix[6]arene Hexaacetate

From extraction experiments and γ-activity measurements, the extraction constant corresponding to the equilibrium H3O+(aq) + 1•Na + (nb)⇔ 1•H3O + (nb) + Na + (aq) taking place in the two-phase water–nitrobenzene system (1 = hexaethyl calix[6]arene hexaacetate; aq = aqueous phase, nb = nitrobenzene phase) was evaluated as log Kex(H3O+,1•Na + ) = 0.0± 0.1...

Keywords: hydroxonium cation, calixarene compound, Water–Nitrobenzene System, DFT study, structure of protonated calixarene

04/2007 | Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag
Stability of Complexes of Alkali Metal Cations with Tetraethyl p-tert-Butylcalix[4]arene Tetraacetate in the Water–Nitrobenzene Extraction System

From extraction experiments and γ-activity measurements, the exchange extraction constants corresponding to the general equilibrium M+(aq)+NaL+(nb) ⇔ ML+(nb)+Na+(aq) taking place in the two-phase water–nitrobenzene system (L = tetraethyl p-tert-butylcalix[4]arene tetraacetate; aq = aqueous phase, nb = nitrobenzene phase) were evaluated...

Keywords: Alkali Metal Cations, calixarene compound, Extraction and Stability Constants, Water-Nitrobenzene System

07/2007 | Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag