Materials, Energy, Water and Environmental Sciences

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Browsing Materials, Energy, Water and Environmental Sciences by Subject "Acetylglucosamine"

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    Theoretical Study of the Interaction between Chitosan Constituents (Glucosamine and Acetylglucosamine Dimers) and Na+ Ions
    (Open Access Library Journal, 2015-10-30) Emmanuel, Marwa; Pogrebnaya, Tatiana P.; Pogrebnaya, Alexander M.
    The interaction of dimers of glucosamine and acetylglucosamine molecules with sodium ion has been studied using the DFT/B3LYP approach. The optimization of geometrical parameters and vibrational spectra calculations were done under 6-31G(d) basis set, and energies of the reactions were obtained using 6-311++G(d, p) basis set. The enthalpies of the association reactions of the dimers of glucosamine and acetylglucosamine with Na+ have been determined. The internal hydrogen bonds OH…O and NH…O have been shown to play an important role in conformational behavior of a particular molecule.