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Wyllieite-type Ag(1.09)Mn(3.46)(AsO(4))(3)
Wafa Frigui1, Mohamed Faouzi Zid, Ahmed Driss
1Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences de Tunis, Université de Tunis ElManar, 2092 Manar II Tunis, Tunisia.
Summary
Single crystals of wyllieite-type silver manganese orthoarsenate were synthesized. This study details the crystal structure, revealing a framework of linked manganese octahedra and channels occupied by silver cations.
Area of Science:
- Inorganic Chemistry
- Crystallography
- Materials Science
Background:
- Wyllieite-type compounds represent a class of complex inorganic materials.
- Understanding the structural intricacies of these compounds is crucial for exploring their properties.
- Silver and manganese orthoarsenates offer potential for novel material applications.
Purpose of the Study:
- To synthesize single crystals of wyllieite-type silver manganese tris-orthoarsenate.
- To elucidate the detailed crystal structure of Ag(1.09)Mn(3.46)(AsO(4))(3).
- To compare the structure with related alluaudite-type and rosemaryite-type compounds.
Main Methods:
- Solid-state reaction for crystal growth.
- Single-crystal X-ray diffraction for structural determination.
- Structural analysis and comparison with related compounds.
Main Results:
- Successfully grew single crystals of Ag(1.09)Mn(3.46)(AsO(4))(3) with the wyllieite-type structure.
- Determined a 3D framework composed of edge- and corner-sharing MnO(6) octahedra.
- Identified two partly occupied Ag(+) sites within [100] channels and a partly occupied Mn site.
Conclusions:
- The crystal structure of wyllieite-type Ag(1.09)Mn(3.46)(AsO(4))(3) has been characterized.
- The framework structure and cation occupancies provide insights into the formation of this complex arsenate.
- Structural comparisons highlight similarities and differences with related mineral structures.
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