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  • 1
    Digitale Medien
    Digitale Medien
    Electron correlation and relativistic effects in the coinage metal compounds (1995)
    Springer
    Theoretical chemistry accounts 92 (1995), S. 253-267 
    Details
    ISSN: 1432-2234
    Schlagwort(e): Dipole moments of CuH, AgH, AuH ; Electron correlation effects ; Relativistic effects ; Polarized basis sets
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary The first-order polarized basis sets of the coinage metal atoms have been used to perform high-level-correlated calculations of the dipole moment in the series of the MeH (Me=Cu, Ag, Au) molecules. The relativistic effects were accounted for by using the quasirelativistic approach based on the mass-velocity and Darwin terms in both the SCF HF and correlated level approximations. The non-relativistic coupled cluster calculations with complete treatment of one- and two-body clusters and perturbative correction for the three-body terms (CCSD(T) predict the following sequence of the dipole moment data: 1.13 a.u. for CuH, 1.35 a.u. for AgH, and 1.21 a.u. for AuH. Upon including the relativistic correction the calculated dipole moments turn out to be 1.05 a.u. for CuH, 1.14 for AgH, and 0.64 a.u. for AuH. The influence of the electron correlation and relativistic effects on the electronic distribution in the MeH molecules is discussed. A comparison of calculations with different number of explicitly correlated electrons gives an approximate scheme for the estimation of the core polarization/correlation contribution.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01125950
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Standardized basis sets for high-level-correlated relativistic calculations of atomic and molecular electric properties in the spin-averaged Douglas-Kroll (no-pair) approximation I. Groups Ib and IIb (1996)
    Springer
    Theoretical chemistry accounts 94 (1996), S. 93-104 
    Details
    ISSN: 1432-2234
    Schlagwort(e): Polarized basis sets ; Relativistic effects ; Douglas-Kroll no-pair approximation ; Dipole polarizabilities of Zn, Cd, Hg — Dipole moments of CuH, AgH, and AuH ; Polarizabilities of atomic ions: Cu+, Ag+, Zn2+, Cd2+, Hg2+
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary The technique developed earlier for the generation of the so-called first-order polarized basis sets for accurate non-relativistic calculations of molecular electric properties is used to obtain similar basis sets suitable for calculations in the Douglas-Kroll no-pair approximation. The corresponding (relativistic) basis sets are devised for atoms of the Groups Ib and IIb of the periodic table and tested in calculations of atomic polarizabilities and dipole moments of the coinage metal hydrides. Excellent performance of these basis sets has been found in the case of molecular calculations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00194934
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Standardized basis sets for high-level-correlated relativistic calculations of atomic and molecular electric properties in the spin-averaged Douglas-Kroll approximation II. Groups Ia and IIa (1997)
    Springer
    Theoretical chemistry accounts 96 (1997), S. 166-175 
    Details
    ISSN: 1432-2234
    Schlagwort(e): Key words: Polarized basis sets ; Relativistic effects ; Douglas-Kroll approximation ; Ionization potentials of group Ia and IIa metals
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract. The technique previously developed for the generation of the so-called first-order polarized basis sets for accurate non-relativistic calculations of molecular electric properties is used to obtain similar basis sets suitable for calculations in the Douglas-Kroll no-pair approximation. The corresponding (relativistic) basis sets are constructed for atoms of groups Ia and IIa of the Periodic Table and tested in calculations of atomic and ionic polarizabilities. Also the first ionization potential of the group Ia and the first and second ionization potential of the group IIa metals have been evaluated to provide additional qualification of the generated basis sets. The present results are compared with earlier non-relativistic and quasirelativistic data and the role of the relativistic effect is discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002140050219
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Electron correlation and relativistic effects in the coinage metal compounds. I. The coinage metal hydrides (1995)
    Springer
    Theoretica chimica acta 92 (1995), S. 253-267 
    Details
    ISSN: 0040-5744
    Schlagwort(e): Key words: Dipole moments of CuH ; AgH ; AuH ; Electron correlation effects ; Relativistic effects ; Polarized basis sets
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary.  The first-order polarized basis sets of the coinage metal atoms have been used to perform high-level-correlated calculations of the dipole moment in the series of the MeH (Me=Cu, Ag, Au) molecules. The relativistic effects were accounted for by using the quasirelativistic approach based on the mass–velocity and Darwin terms in both the SCF HF and correlated level approximations. The non-relativistic coupled cluster calculations with complete treatment of one- and two-body clusters and perturbative correction for the three-body terms (CCSD(T) predict the following sequence of the dipole moment data: 1.13 a.u. for CuH, 1.35 a.u. for AgH, and 1.21 a.u. for AuH. Upon including the relativistic correction the calculated dipole moments turn out to be 1.05 a.u. for CuH, 1.14 for AgH, and 0.64 a.u. for AuH. The influence of the electron correlation and relativistic effects on the electronic distribution in the MeH molecules is discussed. A comparison of calculations with different number of explicitly correlated electrons gives an approximate scheme for the estimation of the core polarization/correlation contribution.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01125950
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    Standardized basis sets for high-level-correlated relativistic calculations of atomic and molecular electric properties in the spin-averaged Douglas–Kroll (no-pair) approximation I. Groups Ib and IIb (1996)
    Springer
    Theoretica chimica acta 94 (1996), S. 93-104 
    Details
    ISSN: 0040-5744
    Schlagwort(e): Key words: Polarized basis sets ; Relativistic effects ; Douglas ; Kroll no-pair approximation ; Dipole polarizabilities of Zn ; Cd ; Hg ; Dipole moments of CuH ; AgH ; and AuH ; Polarizabilities of atomic ions: Cu+ ; Ag+ ; Zn2+ ; Cd2+ ; Hg2+
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary.  The technique developed earlier for the generation of the so-called first-order polarized basis sets for accurate non-relativistic calculations of molecular electric properties is used to obtain similar basis sets suitable for calculations in the Douglas–Kroll no-pair approximation. The corresponding (relativistic) basis sets are devised for atoms of the Groups Ib and IIb of the periodic table and tested in calculations of atomic polarizabilities and dipole moments of the coinage metal hydrides. Excellent performance of these basis sets has been found in the case of molecular calculations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00194934
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
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