. "4"^^ . "The stability of the p-tert-butylcalix[4]arene-tetrakis(N,N-diethylacetamide)-K complex was detd. in a C6H5NO2 soln. satd. with H2O. Extn. expts. were performed for an aq. soln. of KCl in a C6H5NO2 soln. of the calix[4]arene and Na-dicarbollylcobaltate. The 2-phase water-KCl-nitrobenzene-NaDCC extn. system is described by the following equation: K+(aq) + NaL+(nb) KL+(nb) + Na+(aq). The Na+/K+ selectivity for the system is equal to a value of 103.7. This value is even higher than that for the Na-ionophore didecalino-16-crown-5 system which shows an extremely high selectivity for Na+ over K+ (103.0)." . "000257175700019" . . . "Z extrak\u010Dn\u00EDch dat v syst\u00E9mu voda - KCl ? nitrobenzen - Na+ dikarbollylkobaltitan p terc-butylkalix[4]aren-tetrakis(N,N-diethylacetamid) (L= p-terc-butylkalix[4]aren-tetrakis(N,N-diethylacetamid) byla spo\u010Dtena rovnov\u00E1\u017En\u00E1 extrak\u010Dn\u00ED konstanta, odpov\u00EDdaj\u00EDc\u00ED reakci K+(aq) + NaL+(nb) KL+(nb) + Na+(aq), aq =vodn\u00E1 f\u00E1ze, nb = nitrobenzenov\u00E1 f\u00E1ze. Selektivita (Na+/K+) = 103.7."@cs . "22340" . . "Polish Journal of Chemistry" . "Solvent extraction of potassium by nitrobenzene solution of sodium dicarbollylcobaltate in the presence of p-tert-butylcalix[4]arene-tetrakis(N,N-diethylacetamide)" . "RIV/60461373:22340/08:00020709" . "Extrakce iontu K+ roztokem sodn\u00E9 sole dikarbollylkobaltitanu v nitrobenzenu za p\u0159\u00EDtomnosti p-terc-butylkalix[4]aren-tetrakis(N,N-diethylacetamidu)"@cs . "The stability of the p-tert-butylcalix[4]arene-tetrakis(N,N-diethylacetamide)-K complex was detd. in a C6H5NO2 soln. satd. with H2O. Extn. expts. were performed for an aq. soln. of KCl in a C6H5NO2 soln. of the calix[4]arene and Na-dicarbollylcobaltate. The 2-phase water-KCl-nitrobenzene-NaDCC extn. system is described by the following equation: K+(aq) + NaL+(nb) KL+(nb) + Na+(aq). The Na+/K+ selectivity for the system is equal to a value of 103.7. This value is even higher than that for the Na-ionophore didecalino-16-crown-5 system which shows an extremely high selectivity for Na+ over K+ (103.0)."@en . "0137-5083" . "Extrakce iontu K+ roztokem sodn\u00E9 sole dikarbollylkobaltitanu v nitrobenzenu za p\u0159\u00EDtomnosti p-terc-butylkalix[4]aren-tetrakis(N,N-diethylacetamidu)"@cs . . . "Makrl\u00EDk, E." . . . . "[CF46B5D40C5B]" . . "Va\u0148ura, Petr" . . "Solvent extraction of potassium by nitrobenzene solution of sodium dicarbollylcobaltate in the presence of p-tert-butylcalix[4]arene-tetrakis(N,N-diethylacetamide)"@en . . "RIV/60461373:22340/08:00020709!RIV09-MSM-22340___" . . . "Budka, Jan" . . . "Z(MSM4977751303), Z(MSM6046137307)" . "Solvent extraction of potassium by nitrobenzene solution of sodium dicarbollylcobaltate in the presence of p-tert-butylcalix[4]arene-tetrakis(N,N-diethylacetamide)" . "3"^^ . "7" . "calixarene; water-nitrobenzene system; separation; sodium; potassium"@en . "Solvent extraction of potassium by nitrobenzene solution of sodium dicarbollylcobaltate in the presence of p-tert-butylcalix[4]arene-tetrakis(N,N-diethylacetamide)"@en . . . "PL - Polsk\u00E1 republika" . "395851" . "2"^^ . . "82" .