Sodium fullerenehexamalonate Th-C66(COONa)12, a highly asymmetric electrolyte

Article Abstract:

It has been possible to make transport and equilibrium studies with aqueous solutions of the sodium salt of fullerenehexamalonic acid, C66(COONa)12. The experimental data were compared with the theoretical predictions based on the solution of the Poisson-Boltzmann equation for the spherical cell model.

Electrolyte solutions

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Water-soluble fullerenes. 3. Alkali salts of fullerenehexamalonic acid T(sub h)-C66(COOH)12

Article Abstract:

The electrical conductivity, the osmotic coefficient, the apparent molar volume, and the enthalpy of dilution of aqueous solutions of the lithium and cesium salts of fullerenehexamalonic acid, C66(COOH)12, were measured at 25 degree Celcius in a wide concentration range. A semiquantitative agreement was observed when the experimental data was compared with predictions of the spherical cell model.

Science & research, All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Lithium Compounds, Electric properties, Carbon, Aqueous solution reactions, Chemical properties

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Fullerenehexamalonic acid Th-C66(COOH)12, an intermediate spherical electrolyte

Article Abstract:

A study was conducted on the physicochemical properties of the fullerenehexamalonic acid Th-C66(COOH)12. Chemical shifts were assessed using 13C nuclear magnetic resonance analysis. Some of the properties evaluated include sodium salt, solubility, electrical conductivity, osmotic coefficient and apparent molar volume. Fullerenehexamalonic acid behaved as a diprotic acid. A second carboxylic group with an estimated pK2 value of 5.5 was identified. Moreover, the data suggest that the salts of C66(COOH) with strong bases will behave like highly charged strong electrolytes.

Chemistry, Physical and theoretical, Physical chemistry, Electrolytes, Carbon allotropes, Organic acids

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