Exploring Bonding in Heavy Atom Chemistry with Dirac-Exact Methods

ISSN: 1877-945X (Online)
ISSN: 1877-9441 (Print)

Volume 7, 3 Issues, 2017

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Current Inorganic Chemistry

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Yann Garcia
Université Catholique de Louvain Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST)

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Exploring Bonding in Heavy Atom Chemistry with Dirac-Exact Methods

Current Inorganic Chemistry, 3(3): 220-234.

Author(s): Wenli Zou, Michael Filatov and Dieter Cremer.

Affiliation: CATCO, Department of Chemistry, Southern Methodist University, 3215 Daniel Ave, Dallas, Texas 75275-0314, USA.


The normalized elimination of the small component (NESC) method is a first principles 2-component relativistic approach that leads to the Dirac-exact description of one-electron systems. It is a powerful method to routinely investigate chemical and physical properties of molecules containing relativistic atoms. The vibrational modes of mercury halides are investigated to derive via the corresponding local HgX (X = H, F, Cl, Br, I, At) stretching modes an appropriate measure for the HgX bond strength. It is shown that HgF bonding in HgF4 is stronger than that in HgF2, which is a result of enhanced charge transfer from Hg to the four F atoms and the formation of electron deficient 2e-4c bonds with strong ionic character. A generally applicable bonding model for HgX molecules is outlined.


Dirac-exact relativistic methods, local vibrational modes, mercury bonding, Normalized Elimination of the Small Component (NESC), spin-orbit coupling, .

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Article Details

Volume: 3
Issue Number: 3
First Page: 220
Last Page: 234
Page Count: 15
DOI: 10.2174/1877944103666140110230538
Price: $58

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