Über Pyridinium??N??phenolat??Betaine und ihre Verwendung zur Charakterisierung der Polarität von Lösungsmitteln, XVIII. Synthese und UV/Vis??spektroskopische …

C Reichardt, M Eschner

Index: Reichardt, Christian; Eschner, Michael Liebigs Annalen der Chemie, 1991 , # 10 p. 1003 - 1012

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Abstract

Synthesis and UV/Vis spectroscopic properties of the nega-the@(30) values of 1 and the G (30) values of 2 for both aprotic tively solvatochromic, relative to 1 homomorphic, thiobetaine and protic solvents, despite of the fact that sulfur is usually dye 2 are described. The new thiobetaine 2 exhibits an even known to act as worse hydrogen-bond acceptor than oxygen. larger negative solvatochromism and thermochromism than Possible reasons for this ...