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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Computational Chemistry 19 (1998), S. 1887-1898 
    ISSN: 0192-8651
    Keywords: Hartree-Fock exchange plus correlation functionals SCF calculations ; two-body density ; ionization potentials ; electron affinities ; polarizabilities ; Chemistry ; Theoretical, Physical and Computational Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Computer Science
    Notes: Self-consistent field calculations are done using two-body density functionals for the correlation energy. The corresponding functional derivatives are obtained and used in pseudo-eigenvalue equations analogous to the Kohn-Sham ones. The examples studied include atomic systems from He to Ar. The values obtained for ionization potentials, electron affinities, dipole polarizabilities, and virial ratios from these calculations are given, and the effect of exchange is addressed. The results obtained are in good agreement with experimental values, and are of the same quality as those given by accurate exchange-correlation functionals.   © 1998 John Wiley & Sons, Inc.   J Comput Chem 19: 1887-1898, 1998
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Computational Chemistry 19 (1998), S. 1899-1908 
    ISSN: 0192-8651
    Keywords: Hartree-Fock exchange plus correlation functionals SCF calculations ; two-body density ; diatomics ; polyatomics ; equilibrium geometries ; atomization energies ; vibrational frequencies ; dipole moments ; Chemistry ; Theoretical, Physical and Computational Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Computer Science
    Notes: In part I of this series, self-consistent calculations using two-body density functionals for correlation energy were done and applied to atomic systems, giving very good results. We now apply the same scheme to small molecules. The examples studied include diatomic (H2, Li2, B2, C2, N2, O2, F2, HLi, HBe, HB, HF, and HCl) as well as polyatomic (H2O, NH3, H2O2, and O3) molecules at their ground states. The values reported for equilibrium geometries, atomization energies, vibrational frequencies, and dipole moments are compared with experimental and other theoretical calculations, with good agreement in most cases.   © 1998 John Wiley & Sons, Inc.   J Comput Chem 19: 1899-1908, 1998
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
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