The valence states of vanadium in the low-temperature superstructure of
Laboratory for Crystallography, University of Bayreuth - D-95440 Bayreuth, Germany
Corresponding author: email@example.com
Accepted: 8 November 1999
We have applied the bond-valence method to calculate the valencies of the vanadium atoms in the low-temperature superstructure of -NaV2O5. The modulated ladders are found to comprise V4+ and V5+ cations in a zigzag type of charge order. The non-modulated ladders comprise a single type of vanadium atom in the mixed-valence state V4.5+.
PACS: 75.30.Fv – Spin-density waves / 61.44.Fw – Incommensurate crystals / 61.50.Ks – Crystallographic aspects of phase transformations; pressure effects
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