Physical Chemistry Chemical Physics

Trimethylglycine complexes with carboxylic acids and HF: solvation by a polar aprotic solvent

J Guo, B Koeppe, PM Tolstoy

Index: Guo, Jing; Koeppe, Benjamin; Tolstoy, Peter M. Physical Chemistry Chemical Physics, 2011 , vol. 13, # 6 p. 2335 - 2341

Full Text: HTML

Citation Number: 4

Abstract

A series of strong H-bonded complexes of trimethylglycine, also known as betaine, with acetic, chloroacetic, dichloroacetic, trifluoroacetic and hydrofluoric acids as well as the homo- conjugated cation of betaine with trifluoroacetate as the counteranion were investigated by low-temperature (120–160 K) liquid-state NMR spectroscopy using CDF3/CDF2Cl mixture as the solvent. The temperature dependencies of 1H NMR chemical shifts are analyzed in ...