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• LXNMR is used to study chirality-dependent conformations and order parameters of a chiral solute. • Two different R and S conformational distributions of a flexible case test molecule have been found. • Different R , S order parameter distributions of flexible chiral case test molecule have been found. The unique power of Liquid Crystal NMR (LXNMR) in obtaining information about the conformational equilibrium of small solutes dissolved in orienting media can be effectively used to study chirality-related phenomena. In this work we have been able, for the first time in our knowledge, to fully resolve the two different conformational distributions for the R and S enantiomers of a case test molecule (the chiral flexible 4FMBOH: 4-F-α-methyl benzyl alcohol), dissolved in a typical chiral non-racemic aligning solvent, made of PBLG (poly- γ -benzyl- L -glutamate, a helical chiral polypeptide) co-dissolved in CDCl 3. The two enantiomers show significant differences in their conformational behaviors, due to the different solute–solvent orientational molecular interactions experienced by the R and S species. In our opinion, fundamental studies of this kind could pave the way for a better understanding of chirality-dependent molecular interactions, often involved in a number of important chemical processes (concerning pharmaceuticals, biochemistry, advanced materials, etc.) [ABSTRACT FROM AUTHOR]

In this paper, a chirality-sensitive effective orientational potential is, for the first time, proposed. It describes, within the Molecular Field approximation, different solute-solvent ordering interactions, according to the P (clockwise) or M (counterclockwise) nature of helical particles dissolved in uniaxial anisotropic solvents composed, in their turn, of helical P or M particles. By making use of Monte Carlo-simulated order parameters, it is shown that the model is, in principle, able to lead to the absolute enantiorecognition of the unknown chirality of the helical solute particles. This makes it a possible interesting tool for exploiting NMR anisotropic observables in order to achieve the absolute enantiomer assignment of chiral helical solutes. Unlabelled Image • Helical solutes orientationally ordered in organized helical solvents are studied. • A mean torque potential sensitive to P (clockwise) and M (counterclockwise) chirality is formulated. • The effectiveness and reliability of the proposed model is tested on Monte Carlo simulated order parameters. • The model proved to be, in principle, a useful tool for absolute enantiorecognition of the solutes. [ABSTRACT FROM AUTHOR]