Amino-acid zwitterion equilibria: vibrational and nuclear magnetic resonance studies of methyl-substituted thiazolidine-4-carboxylic acids

HE Howard-Lock, CJL Lock…

Index: Howard-Lock, H. E.; Lock, C. J. L.; Martins, M. L.; Smalley, P. S.; Bell, R. A. Canadian Journal of Chemistry, 1986 , vol. 64, p. 1215 - 1219

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Citation Number: 23

Abstract

Infrared and Raman spectra (4000-100 cm-1) of solid samples of six different methyl substituted thiazolidine products of d-penicillamine and l-cysteine hydrochloride have been observed and assigned. Infrared spectra in D2O solutions have been obtained for comparison in order to study the amino-acid zwitterion equilibria. Proton and 13C nmr spectra for the compounds have also been measured.