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Interaction of chitosan and chitin with Ni, Cu and Zn ions : a computational study

Gomes, Jose R. B. and Jorge, Miguel and Gomes, Paula (2014) Interaction of chitosan and chitin with Ni, Cu and Zn ions : a computational study. Journal of Chemical Thermodynamics, 73. pp. 121-129. ISSN 0021-9614

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Abstract

The interaction of chitosan and chitin with monovalent and divalent late transition metal ions was studied by means of density functional theory. The calculations were performed at the B3LYP/6-31+G** level of theory using glucosamine and N-acetylglucosamine monomers as models of chitosan and chitin, respectively, in the absence and in the presence of a few water molecules. The calculations suggest that N-acetylglucosamine is more acidic than glucosamine and that the most stable metal complexes with each of these two molecules have similar stabilities. In the case of the interaction of these two molecules with monovalent cations, the most stable complexes are those with Ni(I). In the case of the divalent cations, complexes with Cu(II) are more favorable, which is in good agreement with the available experimental data.

Item type:Article
ID code:49268
Keywords:thermochemistry, enthalpy of interation, bond dissociation enthalpy, gas-phase acidity, metal complex, Physical and theoretical chemistry, Materials Science(all), Atomic and Molecular Physics, and Optics, Physical and Theoretical Chemistry
Subjects:Science > Chemistry > Physical and theoretical chemistry
Department:Faculty of Engineering > Chemical and Process Engineering
Depositing user: Pure Administrator
Date deposited:17 Sep 2014 10:51
Last modified:22 Feb 2019 03:40
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URI:https://strathprints.strath.ac.uk/id/eprint/49268
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