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Linear response calculations of electronic g-factors and spin-rotational coupling constants for diatomic molecules with a triplet ground state

Engström, Maria (author)
Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan
Minaev, Boris (author)
Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan
Vahtras, Olav (author)
Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan
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Å…gren, Hans (author)
Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan
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 (creator_code:org_t)
Elsevier, 1998
1998
English.
In: Chemical Physics. - : Elsevier. - 0301-0104 .- 1873-4421. ; 237:1-2, s. 149-158
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Electronic g-factors for ESR spectra of a number of diatomic molecules with a ground X3Σ- state and their electronic spin-rotational coupling constants have been calculated by a linear response method. General expressions are used for the second order correction to the electronic g-factor which account for spin-orbit coupling induced admixtures from all excited triplet states to the ground state orbital magnetism. First order corrections - the spin-Zeeman kinetic energy contribution and the one-electron spin-Zeeman gauge contribution - to the g-factor are also accounted for. Calculated g-factors and spin-rotational coupling constants are in a good agreement with available experimental data. In particular, the positive, anomalous, sign of the spin-rotational coupling constant of the PF radical is reproduced.

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