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Journal of Chemical Crystallography

, Volume 40, Issue 12, pp 1125–1128 | Cite as

Hydrothermal Synthesis and Structure of Fe6.36Mn0.64(PO3(OH))4(PO4)2

  • Nadia Belfguira
  • Siwar Walha
  • Abdelhamid Ben Salah
  • Frédéric Hatert
  • André Mathieu Fransolet
  • Ahlem Kabadou
Original Paper

Abstract

Single crystals of iron and manganese phosphate Fe6.36Mn0.64(PO3(OH))4(PO4)2 was synthesized by hydrothermal method. The compound crystallizes in the Fe7(PO4)6 structure type and is isotypic with the solid solution \( {\text{M}}_{{7 - {\text{x}}}} {\text{M}}_{\text{x}}^{\prime} \left( {{\text{HPO}}_{4} } \right)_{4} \left( {{\text{PO}}_{4} } \right)_{2} \) where M is Fe, Co, Mg, Mn. The compound is triclinic, P-1, a = 6.571(5), b = 7.993(3), c = 9.547(2) Ǻ, α = 103.97(1)°, β = 109.29(2)°, γ = 101.57(3)°. The structure is based on a three-dimensional framework of distorted edge-sharing MO6 and MO5 polyhedra, forming infinite chains, which are interlinked by corner-sharing with PO4 tetrahedra. The formula unit is centrosymmetric, with all atoms in general positions except for one Fe atom, which has site symmetry −1.

Graphical Abstract:

Keywords

Hydrothermal synthesis Iron phosphate Manganese phosphate 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Nadia Belfguira
    • 1
    • 2
  • Siwar Walha
    • 1
  • Abdelhamid Ben Salah
    • 1
  • Frédéric Hatert
    • 2
  • André Mathieu Fransolet
    • 2
  • Ahlem Kabadou
    • 1
  1. 1.Laboratoire des Sciences des Matériaux, et d’environnement, Faculté des Sciences de SfaxSfaxTunisia
  2. 2.Laboratoire de Minéralogie, Département de GéologieUniversité, de LiègeSart-TilmanBelgium

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