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PyridiniumN-Phenoxide Betaines and Their Application to the Characterization of Solvent Polarities, XXIII. Determination ofET(30) Values of Supercritical Carbon Dioxide at Various Pressures and Temperatures

✍ Scribed by Eberhardt, Runar ;Löbbecke, Stefan ;Neidhart, Bernd ;Reichardt, Christian

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 524 KB
Volume: 1997
Category: Article
ISSN: 0947-3440
DOI: 10.1002/jlac.199719970622

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✦ Synopsis

Abstract

By means of the negative solvatochromic betaine dyes 1a, b, the UV/Vis‐spectroscopically derived empirical solvent polarity parameter E~T~(30) for supercritical carbon dioxide (sc‐CO~2~) was determined in the temperature and pressure ranges 40–80°C and 150–550 bar, respectively.

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PyridiniumN-phenoxide betaines and their

PyridiniumN-phenoxide betaines and their application to the characterization of solvent polarities, XXI Determination of new and corrections of oldET(30) values as empirical measures of solvent polarity for 40 organic solvents

✍ Reichardt, Christian ;Schäfer, Gerhard 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 411 KB

## Abstract By means of the negative solvatochromic betaine dyes 1a and 1b empirical solvent polarity parameters __E__~T~(30) for 40 organic solvents of current interest were newly determined or corrected (Table 1).