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Spin–orbit interaction in the Douglas–Kroll approach to relativistic density functional theory: the screened nuclear potential approximation for molecules
- Source :
-
Chemical Physics Letters . Nov2003, Vol. 382 Issue 1/2, p186. 8p. - Publication Year :
- 2003
-
Abstract
- We investigated Boettger’s screened nuclear potential approximation for the spin–orbit interaction (SNSO) in the context of the Douglas–Kroll approach to relativistic Kohn–Sham theory. We extended the approximation to second-order terms and evaluated it for various atomic and molecular properties (spin–orbit splittings, g-tensor shifts, bond lengths, vibrational frequencies and binding energies) and compared the SNSO results with those of a self-consistent relativistic treatment of the electron–electron (ee) interaction. The SNSO approximation is comparable in computational effort to the model based on the nuclear potential only, but delivers molecular results that agree well with those of the more exact ee treatment. [Copyright &y& Elsevier]
- Subjects :
- *ELECTRONS
*NUCLEAR magnetic resonance
*BINDING energy
*NUCLEAR chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 00092614
- Volume :
- 382
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Chemical Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 11402550
- Full Text :
- https://doi.org/10.1016/j.cplett.2003.10.072