Publications [#232024] of David N. Beratan

Journal Articles
  1. Goldsmith, M-R; Jayasuriya, N; Beratan, DN; Wipf, P, Optical rotation of noncovalent aggregates., Journal of the American Chemical Society, vol. 125 no. 51 (December, 2003), pp. 15696-15697 [14677931], [doi] .

    Abstract:
    Dilute solutions of (R)-(-)-pantolactone in CCl4 were studied by polarimetry in conjunction with theoretical calculations of [alpha]D. Our data demonstrate that the self-association of a chiral solute results in a change in [alpha]D that can be accounted for by the presence of hydrogen-bonded dimeric species. The theoretical analysis predicts a concentration-dependent specific rotation in good agreement with experiment. Further exploration of monomer and dimer [alpha]D differences, through atomic map analysis, reveals large contributions to [alpha]D from the hydrogen-bonded hydroxyl groups in the tightly-coupled dimer. This study extends the computation of chiroptical properties to the accurate concentration-dependent prediction of [alpha]D for noncovalently interacting self-associating species.