Leszek Ziemczonek - Profil naukowy - MOST Wiedzy

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Zdjęcie profilowe: dr Leszek Ziemczonek

dr Leszek Ziemczonek

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  • Ab initio and density functional theory calculations of proton affinities for volatile organic compounds

    - The European Physical Journal-Special Topics - Rok 2007

    The Hatree-Fock method with 6-311G** split-valence molecular orbitals basis sets and the density function theory-B3LYP have been applied to geometrical optimizations and calculations of total electronic, zero point vibrational energies and proton affinities at 298 K for volatile organic compounds. Calculated values of proton affinities are compared with experimental data.

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  • Proton transfer reactions for ionized water clusters

    - CZECHOSLOVAK JOURNAL OF PHYSICS - Rok 2004

    Calculations of formation energies of the ionized water clusters and energies of reactions between small (including less than eight water molecules) neutral and positively ionized water clusters are presented. Moreover, we discuss some reaction paths between neutral and positively charged dimers, trimers and tetramers and proton transfer reactions (PTR) between cyclic clusters and H3O+ ions which can appear in beam experiments...

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  • Dissociation energies of protonated water clusters

    - RADIATION PHYSICS AND CHEMISTRY - Rok 2003

    Relative abundances of positively ionized water clusters formed in a low-pressure electrical discharge as function of reduced electric field were obtained by using drift cell and quadrupole mass spectrometer. It was noticed that some clusters say with n = 4 were more abundant than others, at comparable drift conditions. Dissociation energies have been derived from equilibrium conditions for relative clusters abundances. The Hartree-Fock...

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