Water soluble calix[4]arenes. A thermodynamic investigation of proton complex formation

被引：94

作者：

Arena, Giuseppe ^{[1
]}

Cali, Rosario ^{[1
]}

Lombardo, Gaetano Giuseppe ^{[2
]}

Rizzarelli, Enrico ^{[1
,2
]}

Sciotto, Domenico ^{[1
]}

Ungaro, Rocco ^{[3
]}

Casnati, Alessandro ^{[3
]}

机构：

[1] Univ Catania, Dipartimento Sci Chim, Viale A Doria 8, I-95125 Catania, Italy

[2] CNR, Ist Studio Sostanze Nat Interesse Alimentare & Ch, Catania, Italy

[3] Univ Parma, Ist Chim Organ, I-43100 Parma, Italy

来源：

SUPRAMOLECULAR CHEMISTRY | 1992年 / 1卷 / 01期

关键词：

D O I：

10.1080/10610279208027437

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Thermodynamic parameters of protonation of calix[4]arene-p-tetra sulphonate were potentiometrically and calorimetrically determined in aqueous solution at 25 degrees C and I = 0.1 mol dm(-3) (NaNO3). These values were compared with literature findings. AW and AF values reveal that the penta-anion protonation is energetically costly. In this connection the role played by hydrogen bonding and the cone conformation stabilization are critically discussed. Proton formation constants of the calix[4]arene-p-tetrasulphonate-tetra-carboxylate derivative in the cone conformation were also potentiometrically determined under the same experimental conditions.

引用

页码：19 / 24

页数：6

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