Hyperfine Interactions

, Volume 166, Issue 1–4, pp 599–603 | Cite as

The Mössbauer spectrum of synthetic hureaulite: Fe5 2+(H2O)4(PO4H)2(PO4)2

  • Angel Bustamante
  • Enrico Mattievich
  • Helio S. de Amorim
  • Ivo Vencato
  • Máximo M. Silveira


The crystal structure of synthetic ferrous hureaulite, Fe5 2+ (H2O)4(PO4H)2(PO4)2, was refined from single-crystal X-ray data. It is monoclinic, space group C2/c, with a=17.487(4), b=9.017(2), c=9.338(2) Å, β=96.27(3)°, V=1463.6(6) Å3, Z=4 and D calc=3.327 g/cm3. This end member of the hureaulite series was crystallized under distinctly acidic conditions, by a method that gives perfect crystals, large enough for X-ray single crystal studies. The main feature of the hureaulite structure is that it has an equal number of normal (PO4)3+ and acid (PO4H)2+ tetradentate groups. These are centered on Fe2+ atoms and share corners with edge-linked octahedra, forming pentamer units. The five Fe2+ atoms are distributed on three distinct sites in these units. This can be directly observed in the Mössbauer spectrum at 295 K, which contains three doublets whose relative intensities correspond to the 1:2:2 distributions of crystallographic sites.

Key words

iron phosphate Hureaulite Mössbauer Spectroscopy X-ray refinement 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Domingues, P.H., Moreira, L.F., Mattievich, E., Sarkissian, B.: J. Magn. Magn. Mater. 167, 87 (1997)CrossRefADSGoogle Scholar
  2. 2.
    Nomura, K., Ujihira, Y.: Journal of the Chemical Society of Japan 8, 1352 (1982)Google Scholar
  3. 3.
    Moreira, L.F., Domingues, P.H., Mattievich, E.: J. Magn. Magn. Mater. 132, 191 (1994)CrossRefADSGoogle Scholar
  4. 4.
    Fisher, D.J.: Am. Mineral. 49, 398 (1964)Google Scholar
  5. 5.
    Moore, P.B., Araki, T.: Am. Mineral. 58, 302 (1973)Google Scholar
  6. 6.
    von Klement, R., Meinhold, M., Stang, H., Stenke, G.: Zeitschrift fuer Anorganische und Allgemeine Chemie 377, 135 (1970)CrossRefGoogle Scholar
  7. 7.
    Sheldrick, G.M.: SHELXL97. Program for the Refinement of Crystal Structures. University of Göttingen, Germany (1997)Google Scholar
  8. 8.
    Robinson, K., Gibbs, G.V., Ribbe, P.H.: Science 172, 567 (1971)CrossRefADSGoogle Scholar
  9. 9.
    Shinno, I., Li, Z.: Am. Mineral. 83, 1316 (1998)Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Angel Bustamante
    • 1
  • Enrico Mattievich
    • 2
  • Helio S. de Amorim
    • 2
  • Ivo Vencato
    • 3
  • Máximo M. Silveira
    • 2
  1. 1.Facultad de Ciencias FísicasUniversidad Nacional Mayor de San MarcosLima-14Peru
  2. 2.Instituto de FísicaUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil
  3. 3.Instituto de FísicaUniversidade Federal de GoiásGoiâniaBrazil

Personalised recommendations