Theoretica chimica acta

, Volume 62, Issue 4, pp 319–327 | Cite as

Exchange interactions between dimers of chromium(III). A cluster approach

  • Urs Hauser
  • Hans U. Güdel
Original Investigations


Exchange interactions in dimers, tetramers and octamers of chromium(III) are treated with an effective Hamiltonian of the Heisenberg-Dirac-vanVleck (HDvV) type. Energies and wave functions of the cluster states are computed. The results of interdimer interactions are: (i) energy splittings and (ii) a contamination of the cluster ground state with excited configurations. The results are used for a qualitative rationalisation of the observed low-temperature properties of Cs3Cr2Cl9.

Key words

Exchange interactions Chromium(III) dimer Chromium(III) tetramer Chromium(III) octamer 


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Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • Urs Hauser
    • 1
  • Hans U. Güdel
    • 1
  1. 1.Institut für anorganische, analytische und physikalische ChemieUniversität BernBern 9Switzerland

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