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Solvent Clustering around Pyrazine Ions in the High-Compressibility Region of Supercritical Ethane
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Section:Abstract
Pyrazine and methylpyrazine attach electrons reversibly in supercritical (SC) ethane in the interesting region near critical densities. Very rapid shifts in the attachment equilibrium occur over very narrow pressure ranges. Reaction volumes for electron attachment to these solutes range from −1.0 to −45 L/mol, depending on conditions. The agreement of the values of ΔVr with the calculated values from the compressible continuum model is excellent, indicating that the model predicts the electrostriction volume by ions in SC ethane quite accurately, and also suggesting that the partial molar volumes of neutral pyrazine and methylpyrazine are small by comparison to that of the ions.
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This article has been cited by 8 ACS Journal articles (5 most recent appear below).
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Enhancing the Rate of the Diels−Alder Reaction Using CO2 + Ethanol and CO2 + n-Hexane Mixed Solvents of Different Phase Regions
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Prediction of Supercritical Ethane Bulk Solvent Densities for Pyrazine Solvation Shell Average Occupancy by 1, 2, 3, and 4 Ethanes: Combined Experimental and ab Initio Approach
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Properties and Reactions of Charged Species in Nonpolar Supercritical Fluids
Richard Holroyd, Masaru Nishikawa, Kengo ItohThe Journal of Physical Chemistry B2005 109 (7), 2478-2486Properties and Reactions of Charged Species in Nonpolar Supercritical Fluids
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History
- Published In Issue December 07, 2000
- Received July 30, 2000
Revised September 21, 2000
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