A new approach for NMR shielding constant calculations in the framework of coupled density functional theory (DPT) with individual gauges for localized orbitals is presented. A new model is suggested for an exchange-correlation potential response linear with respect to an external magnetic field sui
Calculations of NMR shielding constants by uncoupled density functional theory
β Scribed by V.G. Malkin; O.L. Malkina; D.R. Salahub
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 583 KB
- Volume
- 204
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Results are presented for NMR shielding constant calculations in the framework of uncoupled density functional theory with two different choices of the gauge origins for molecular orbitals. The calculations were carried out using a modified version of the program dehlon. The approaches presented arc much less time-consuming than analogous Hartree-Fock calculations. For the most part the results are in good agreement with those of the coupled Hartree-Fock IGLO (individual gauge for localized orbitals) method and with experimental data.
π SIMILAR VOLUMES
A new method based on density functional theory for the calculation of spin-orbit corrections to NMR shielding constants is presented. This approach provides the opportunity of calculating the relativistic spin-orbit correction, based on a DFT method which incorporates correlation effects and with t
Isotropic hypefine coupling constants for the radicals BH2, CH? , NH2, OH:, BHr , CH,, NH:, H\*CN, HzCO+ and CH&H are calculated using density-functional theory with a gradient-corrected local-spin-density approximation and a Slater-type-orbital basis set. The agreement between the calculated and ob