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Ahmed Ould Saleck1, Abderrazzak Assani1, Mohamed Saadi1
1Laboratoire de Chimie Appliquée des Matériaux, Centre Sciences des Matériaux, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn Batouta, BP 1014, Rabat, Morocco.
Acta Crystallographica. Section E, Crystallographic Communications
|September 19, 2018
Summary
Two novel indium phosphates with alluaudite-type structures were synthesized. These compounds feature cationic disorder and partially occupied monovalent cation sites, revealing complex structural characteristics.
Area of Science:
- Inorganic Chemistry
- Solid-State Chemistry
- Crystal Engineering
Background:
- Alluaudite-type structures are known for their complex framework and potential for cation substitution.
- Understanding the structural nuances of novel phosphates is crucial for materials science.
Purpose of the Study:
- To synthesize and characterize new sodium and silver magnesium indium tris-(orthophosphate) compounds.
- To elucidate the crystal structure and cation distribution in these alluaudite-type phosphates.
Main Methods:
- Single crystal growth via solid-state reactions.
- X-ray crystallography for structure determination.
- Analysis of cationic disorder and site occupancy.
Main Results:
- Two new isotypic phosphates, sodium magnesium indium(III) tris-(orthophosphate) and silver magnesium indium(III) tris-(orthophosphate), were successfully synthesized.
- Both compounds exhibit alluaudite-type structures with edge-sharing [(Mg,In)O6] octahedra chains linked by PO4 tetrahedra.
- Cationic disorder between Mg and In sites, and partial occupation of Na and Ag sites were observed, with distorted coordination spheres.
Conclusions:
- The synthesis and structural characterization of these novel phosphates expand the known family of alluaudite-type compounds.
- The observed cationic disorder and site occupancies provide insights into structure-property relationships in complex inorganic materials.
