New mixed aluminium–chromium diarsenate

Potassium chromium aluminium diarsenate, KCr(1/4)Al(3/4)As(2)O(7), was prepared by solid-state reaction. The structure consists of (Cr(1/4)/Al(3/4))O(6) octa­hedra and As(2)O(7) diarsenate groups sharing corners to build up a three-dimensional anionic framework. The potassium cations are located in...

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Autores principales: Bouhassine, Mohamad Alem, Boughzala, Habib
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2017
Materias:
Research Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5347050/
https://www.ncbi.nlm.nih.gov/pubmed/28316805
http://dx.doi.org/10.1107/S2056989017001797
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author Bouhassine, Mohamad Alem
Boughzala, Habib
author_facet Bouhassine, Mohamad Alem
Boughzala, Habib
author_sort Bouhassine, Mohamad Alem
collection PubMed
description Potassium chromium aluminium diarsenate, KCr(1/4)Al(3/4)As(2)O(7), was prepared by solid-state reaction. The structure consists of (Cr(1/4)/Al(3/4))O(6) octa­hedra and As(2)O(7) diarsenate groups sharing corners to build up a three-dimensional anionic framework. The potassium cations are located in wide channels running along the c-axis direction. The crystal structure is isostructural with the triclinic A (I) M (III) X (2)O(7) (A (I) = alkali metal; M (III) = Al, Cr, Fe; X = As, P) compounds. However, the M (III) octa­hedrally coordinated site is 25% partially occupied by chromium and 75% by aluminium.
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spelling pubmed-53470502017-03-17 New mixed aluminium–chromium diarsenate Bouhassine, Mohamad Alem Boughzala, Habib Acta Crystallogr E Crystallogr Commun Research Communications Potassium chromium aluminium diarsenate, KCr(1/4)Al(3/4)As(2)O(7), was prepared by solid-state reaction. The structure consists of (Cr(1/4)/Al(3/4))O(6) octa­hedra and As(2)O(7) diarsenate groups sharing corners to build up a three-dimensional anionic framework. The potassium cations are located in wide channels running along the c-axis direction. The crystal structure is isostructural with the triclinic A (I) M (III) X (2)O(7) (A (I) = alkali metal; M (III) = Al, Cr, Fe; X = As, P) compounds. However, the M (III) octa­hedrally coordinated site is 25% partially occupied by chromium and 75% by aluminium. International Union of Crystallography 2017-02-10 /pmc/articles/PMC5347050/ /pubmed/28316805 http://dx.doi.org/10.1107/S2056989017001797 Text en © Bouhassine and Boughzala 2017 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.http://creativecommons.org/licenses/by/2.0/uk/
spellingShingle Research Communications
Bouhassine, Mohamad Alem
Boughzala, Habib
New mixed aluminium–chromium diarsenate
title New mixed aluminium–chromium diarsenate
title_full New mixed aluminium–chromium diarsenate
title_fullStr New mixed aluminium–chromium diarsenate
title_full_unstemmed New mixed aluminium–chromium diarsenate
title_short New mixed aluminium–chromium diarsenate
title_sort new mixed aluminium–chromium diarsenate
topic Research Communications
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5347050/
https://www.ncbi.nlm.nih.gov/pubmed/28316805
http://dx.doi.org/10.1107/S2056989017001797
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