A new method (IGAIM -individual gauges for atoms in molecules) is presented for relatively accurate ab initio calculations of molecular magnetic response properties. The current density induced within an atom in a molecule by an external magnetic field is well described by the coupled, perturbed Har
Calculation of magnetic response properties using a continuous set of gauge transformations
β Scribed by Todd A. Keith; Richard F.W. Bader
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 828 KB
- Volume
- 210
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
A new method is described for the calculation of the magnetic susceptibility and nuclear magnetic shielding tensors using a separate gauge origin for each point in space to calculate the magnetically induced current. The method yields accurate threedimensional induced molecular current distributions and correspondingly accurate values for the magnetic response properties. The method is easily implemented within existing coupled-perturbed Hartree-Fock programs.
π SIMILAR VOLUMES
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Completeness condltlons have been appkd III thz theory of molecular magnetrc properttes to determme the best gauge for a given basis set They can smukly be used to optmuse the basis for a fLxed gauge orlgm Test results mdlclte that the gauge dependence of the calculated properties can be slgmfkantly
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