The title compound, synthesized by modifying the procedure described in literature, was characterized by NMR, IR, TG, LSIMS, ICP-AES and potentiometry, and found to be an octasodium salt, Its protonation constants were determined in aqueous solution at 25 degrees C and I = 0.1 mol dm(-3) (NaNO3) and compared with literature data determined under similar conditions. Enthalpy and entropy values, determined calorimetrically under the same experimental conditions employed for the potentiometric measurements, together with NMR results, provide a detailed picture of the processes taking place in aqueous solution.
The title compound, synthesized by modifying the procedure described in literature, was characterized by NMR, IR, TG, LSIMS, ICP-AES and potentiometry, and found to be an octasodium salt, Its protonation constants were determined in aqueous solution at 25 degrees C and I = 0.1 mol dm(-3) (NaNO3) and compared with literature data determined under similar conditions. Enthalpy and entropy values, determined calorimetrically under the same experimental conditions employed for the potentiometric measurements, together with NMR results, provide a detailed picture of the processes taking place in aqueous solution.
WATER-SOLUBLE CALIX[6]ARENES - CHARACTERIZATION OF 5,11,17,23,29,35-HEXASULPHONATE-37,38,39,40,41,42-HEXAHYDROXYCALIX[6]ARE NE AND THERMODYNAMIC STUDY OF PROTON COMPLEX-FORMATION
ARENA, Giuseppe;CONTINO, Annalinda;SCIOTTO, Domenico
1995-01-01
Abstract
The title compound, synthesized by modifying the procedure described in literature, was characterized by NMR, IR, TG, LSIMS, ICP-AES and potentiometry, and found to be an octasodium salt, Its protonation constants were determined in aqueous solution at 25 degrees C and I = 0.1 mol dm(-3) (NaNO3) and compared with literature data determined under similar conditions. Enthalpy and entropy values, determined calorimetrically under the same experimental conditions employed for the potentiometric measurements, together with NMR results, provide a detailed picture of the processes taking place in aqueous solution.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
