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  • 1
    Digitale Medien
    Digitale Medien
    Energy-adjusted pseudopotentials for the rare earth elements (1989)
    Springer
    Theoretical chemistry accounts 75 (1989), S. 173-194 
    Details
    ISSN: 1432-2234
    Schlagwort(e): Pseudopotentials ; Rare earth elements
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Nonrelativistic and quasirelativistic energy-adjusted pseudopotentials and optimized (7s6p5d)/[5s4p3d]-GTO valence basis sets for use in molecular calculations for fixed f-subconfigurations of the rare earth elements, La through Lu, have been generated. Atomic excitation and ionization energies from numerical HF, as well as SCF pseudopotential calculations using the derived basis sets, differ by less than 0.1 eV from numerical HF all-electron results. Corresponding values obtained from CI(SD), CEPA-1, as well as density functional calculations using the quasirelativistic pseudopotentials, are in reasonable agreement with experimental data.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00528565
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  • 2
    Digitale Medien
    Digitale Medien
    On the bonding of small group 12 clusters (1999)
    Springer
    The European physical journal 6 (1999), S. 243-254 
    Details
    ISSN: 1434-6079
    Schlagwort(e): PACS. 36.40.-c Atomic and molecular clusters
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract: Characteristic properties as well as possible differences in bonding of small group 12 clusters ( , Cd, Hg; ) have been investigated by quantum chemical ab initio methods, i.e., relativistic large-core pseudopotentials, core-polarization potentials and coupled-cluster correlation treatments. A comparison of cohesive energies and spectroscopic properties like ionization potentials, electron affinities, and vibrational frequencies reveals a close similarity between the clusters of Cd and Hg. For Zn clusters we observed an exceptional increase in stability between and . In order to get a more qualitative picture of the covalent contributions to bonding we have calculated the electron localization function (ELF). The ELF analysis is in accordance with the calculated spectroscopic properties and shows predominant van der Waals interactions with weak covalent contributions for all the cluster sizes considered.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s100500050341
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