Study of the solid-state hydrogen isotope exchange ofl-alanine |
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| Authors: | Yu. A. Zolotarev E. V. Laskatelev V. S. Kozik E. M. Dorokhova S. G. Rozenberg Yu. A. Borisov N. F. Myasoedov |
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| Affiliation: | (1) Institute of Molecular Genetics, Russian Academy of Sciences, 26 pl. Kurchatova, 123182 Moscow, Russian Federation;(2) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813 Moscow, Russian Federation |
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| Abstract: | The solid-state reaction of isotope exchange ofl-alanine (l-Ala) with spillover-hydrogen activated on a Rh(Pd)-supported catalyst was studied. The reactivity of the carbon atoms and the activation energies of isotope exchange of the hydrogen at the C(2) and C(3) atoms of thel-Ala molecule were determined using tritium NMR. Theab initio calculations of the activation energy of a model reaction between the alanine molecule and a hydroxonium cation were carried out. The mechanism and plausible structures of the transition states of this reaction were proposed. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 757–762, April. 1997. |
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| Keywords: | isotope exchange quantum-chemical calculations activation energy hydrogen spillover |
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