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Updated: Jun 24, 2025
09:34
Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties
Published on: November 15, 2016
9.2K
Ilmenite-type Na2(Fe2/3Te4/3)O6.
1TU Wien, Institute for Chemical Technologies and Analytics, Division of Structural Chemistry, Getreidemarkt 9/E164-05-1, 1060 Vienna, Austria.
Iucrdata
|June 7, 2024
Summary
Tris-odium iron(III) ditellurium(VI) nona-oxide crystallizes in the ilmenite structure. Sodium and mixed iron-tellurium sites show distinct octahedral distortions, impacting crystal properties.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Crystallography
Background:
- The ilmenite structure (FeTiO3) is a common motif in various functional materials.
- Understanding cation site occupancy and distortion is crucial for predicting material properties.
Purpose of the Study:
- To elucidate the crystal structure of tris-odium iron(III) ditellurium(VI) nona-oxide, Na3(FeTe2)O9.
- To analyze the coordination environment and distortions around the sodium and mixed-occupied iron-tellurium sites.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the crystal structure.
- Analysis of bond lengths and distortion parameters quantified the octahedral geometries.
Main Results:
- The compound adopts the ilmenite structure type (FeTiO3).
- The Ti site is occupied by Na, and the Fe site is a mixed site of Fe(III) and Te(VI) in a 1:2 ratio.
- The [NaO6] octahedron exhibits significant distortions compared to the slightly distorted [(Fe,Te)O6] octahedron.
Conclusions:
- The structural characterization reveals a novel ilmenite derivative with unique site occupancies.
- The differing octahedral distortions provide insights into potential structure-property relationships for this material.
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