Synthesis and crystal structure of the new vanadate AgCaVO4: Comparison with the arcanite structure

Synthesis and crystal structure of the new vanadate AgCaVO4: Comparison with the arcanite structure AbstractWe report the synthesis and the crystal structure of the new vanadate AgCaVO4 from laboratory powder X-ray data. Contrary to the previously reported AgBVO4 (B=Mg, Cd), AgCaVO4 exhibits the arcanite structure (β-K2SO4). Although it exhibits the same structure than arcanite, significant differences are observed. These differences are explained by deriving the atomic displacement field. The change of connectivity within the structure between β-K2SO4 and AgCaVO4 results from a rotation of the VO4 tetrahedra giving rise to a change from a face sharing to an edge sharing octahedral chains. Additionally, the thermal expansion of AgCaVO4 has been investigated up to 800°C. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Zeitschrift für Kristallographie - Crystalline Materials de Gruyter

Synthesis and crystal structure of the new vanadate AgCaVO4: Comparison with the arcanite structure

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Publisher
de Gruyter
Copyright
©2017 Walter de Gruyter GmbH, Berlin/Boston
ISSN
2196-7105
eISSN
2196-7105
DOI
10.1515/zkri-2017-2041
Publisher site
See Article on Publisher Site

Abstract

AbstractWe report the synthesis and the crystal structure of the new vanadate AgCaVO4 from laboratory powder X-ray data. Contrary to the previously reported AgBVO4 (B=Mg, Cd), AgCaVO4 exhibits the arcanite structure (β-K2SO4). Although it exhibits the same structure than arcanite, significant differences are observed. These differences are explained by deriving the atomic displacement field. The change of connectivity within the structure between β-K2SO4 and AgCaVO4 results from a rotation of the VO4 tetrahedra giving rise to a change from a face sharing to an edge sharing octahedral chains. Additionally, the thermal expansion of AgCaVO4 has been investigated up to 800°C.

Journal

Zeitschrift für Kristallographie - Crystalline Materialsde Gruyter

Published: Oct 26, 2017

References

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