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Open Physics

formerly Central European Journal of Physics

Editor-in-Chief: Feng, Jonathan

Managing Editor: Lesna-Szreter, Paulina

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IMPACT FACTOR 2016 (Central European Journal of Physics): 0.765

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Volume 4, Issue 4 (Dec 2006)


Towards relativistic ECP / DFT description of chemical bonding in E112 compounds: spin-orbit and correlation effects in E112X versus HgX (X=H, Au)

Andréi Zaitsevskii / Elena Rykova / Nikolai Mosyagin / Anatoly Titov
Published Online: 2006-12-01 | DOI: https://doi.org/10.2478/s11534-006-0029-7


The relativistic effective core potential (RECP) approach combined with the spin-orbit DFT electron correlation treatment was applied to the study of the bonding of eka-mercury (E112) and mercury with hydrogen and gold atoms. Highly accurate small-core shape-consistent RECPs derived from Hartree-Fock-Dirac-Breit atomic calculations with Fermi nuclear model were employed. The accuracy of the DFT correlation treatment was checked by comparing the results in the scalar-relativistic (spin-orbit-free) limit with those of high level scalar-relativistic correlation calculations within the same RECP model. E112H was predicted to be slightly more stable than its lighter homologue (HgH). The E112-Au bond energy is expected to be ca. 25–30 % weaker than that of Hg-Au. The role of correlations and magnetic (spin-dependent) interactions in E112-X and Hg-X (X=H, Au) bonding is discussed. The present computational procedure can be readily applied to much larger systems and seems to be a promising tool for simulating E112 adsorption on metal surfaces.

Keywords: Superheavy elements; relativistic electronic structure calculations; effective core potentials

Keywords: 31.10.+z; 31.15.Ar; 31.15.Ew; 31.25.Nj; 33.15.-e; 31.30.Jv; 33.15.Fm

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Published Online: 2006-12-01

Published in Print: 2006-12-01

Citation Information: Open Physics, ISSN (Online) 2391-5471, DOI: https://doi.org/10.2478/s11534-006-0029-7.

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