The IINS spectroscopy of amino acids: l- and dl-valine

Abstract

Results of the inelastic incoherent neutron scattering (IINS) study on normal and N-deuterated l and dl-valine at pulsed reactor IBR-2 are reported. l-Valine spectra show additional bands as compared with dl-valine due to the difference in the respective molecular conformation. Both in l- and dl-valine, lines corresponding to out-of-plane γ(N-H ··· O) hydrogen bond vibrations are observed at 279, 505, 513 cm −1 and 276, 559, 592 cm −1, respectively.