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

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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.

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Authors and Affiliations

  1. Laboratoire des Sciences des Matériaux, et d’environnement, Faculté des Sciences de Sfax, BP 1171, 3000, Sfax, Tunisia

    Nadia Belfguira, Siwar Walha, Abdelhamid Ben Salah & Ahlem Kabadou

  2. Laboratoire de Minéralogie, Département de Géologie, Université, de Liège, Bâtiment B18, 4000, Sart-Tilman, Belgium

    Nadia Belfguira, Frédéric Hatert & André Mathieu Fransolet

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  1. Nadia Belfguira
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  2. Siwar Walha
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  3. Abdelhamid Ben Salah
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  4. Frédéric Hatert
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  5. André Mathieu Fransolet
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  6. Ahlem Kabadou
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Correspondence to Nadia Belfguira.

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Belfguira, N., Walha, S., Ben Salah, A. et al. Hydrothermal Synthesis and Structure of Fe6.36Mn0.64(PO3(OH))4(PO4)2 . J Chem Crystallogr 40, 1125–1128 (2010). https://doi.org/10.1007/s10870-010-9807-6

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  • DOI: https://doi.org/10.1007/s10870-010-9807-6

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