Routine ~2H NMR in Ternary Mixtures of Poly(#gamma#-benzyl-L-glutamate) - a Useful Tool for Studying Molecular Shape, Symmetry, and Conformational Motions

摘要

~2H NMR measurements of deuterated solute molecules in a poly(#gamma#-benzyl-L-glutamate)(PBLG)/dichloromethane or chloroform liquid-crystalline solvent are presented. The quadru-polar splittings of solutes were determined in order to made good use of them in stereochemical and conformational analyses. The results obtained for achiral model compounds of different size, symmetry, shape, and flexibility are interpreted qualitatively. Emphasis is put on the routine application of this technique. Advantages of working in such ly-otropic liquid-crystalline solvents, namely the enhanced signal dispersion or the rich information content of the ~2H spectra compared with those recorded in isotropic media, are emphasised.