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Ab initio correlation approach to a ferric wheel-like molecular cluster

Author

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  • H. Nieber
  • K. Doll
  • G. Zwicknagl

Abstract

We present an ab initio study of electronic correlation effects in a molecular cluster derived from the hexanuclear ferric wheel [ LiFe 6 (OCH 3 ) 12 -(dbm) 6 ] PF 6 . The electronic and magnetic properties of this cluster have been studied with all-electron Hartree-Fock, full-potential density functional calculations and multi-reference second-order perturbation theory. For different levels of correlation, a detailed study of the impact of the electronic correlation on the exchange parameter was feasible. As the main result, we found that the influence of the bridge oxygen atoms on the exchange parameter is less intense than the influence of the apical ligand groups, which is due to the geometry of the cluster. With respect to the cluster model approach, the experimental value of the exchange parameter was affirmed. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Suggested Citation

  • H. Nieber & K. Doll & G. Zwicknagl, 2006. "Ab initio correlation approach to a ferric wheel-like molecular cluster," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 51(2), pages 215-221, May.
    • Handle: RePEc:spr:eurphb:v:51:y:2006:i:2:p:215-221
    DOI: 10.1140/epjb/e2006-00220-0
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