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Crystal structure of CsCrAs2O7, a new member of the diarsenate family.

Bouhassine MA, Boughzala H - Acta Crystallogr E Crystallogr Commun (2015)

Bottom Line: Caesium chromium(III) diarsenate(V), CsCrAs2O7, was prepared by solid-state reactions.The title structure consists of isolated CrO6 octa-hedra and As2O7 diarsenate groups, sharing corners to build up a three-dimensional [CrAs2O7](-) anionic framework.CsCrAs2O7 is isotypic with the monoclinic A (I) M (III) X 2O7 (A (I) = alkali metal; M (III) = Al, Cr, Fe; X = As, P) type I family of compounds crystallizing in the space group P21/c.

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Affiliation: Laboratoire de Materiaux et Cristallochimie, Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092 Manar II Tunis, Tunisia.

ABSTRACT
Caesium chromium(III) diarsenate(V), CsCrAs2O7, was prepared by solid-state reactions. The title structure consists of isolated CrO6 octa-hedra and As2O7 diarsenate groups, sharing corners to build up a three-dimensional [CrAs2O7](-) anionic framework. In this framework, channels extending parallel to [001] are present in which the ten-coordinate Cs(+) ions reside. CsCrAs2O7 is isotypic with the monoclinic A (I) M (III) X 2O7 (A (I) = alkali metal; M (III) = Al, Cr, Fe; X = As, P) type I family of compounds crystallizing in the space group P21/c.

No MeSH data available.


Projection of the CsCrAs2O7 structure showing the channels parallel to [001] in which the Cs+ cations are located.
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fig2: Projection of the CsCrAs2O7 structure showing the channels parallel to [001] in which the Cs+ cations are located.

Mentions: The structure of CsCrAs2O7 can be described as a three-dimensional [CrAs2O7]− anionic framework (Fig. 1 ▶) with channels extending parallel to [001] that are occupied by ten-coordinate Cs+ cations (Fig. 2 ▶).


Crystal structure of CsCrAs2O7, a new member of the diarsenate family.

Bouhassine MA, Boughzala H - Acta Crystallogr E Crystallogr Commun (2015)

Projection of the CsCrAs2O7 structure showing the channels parallel to [001] in which the Cs+ cations are located.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4459375&req=5

fig2: Projection of the CsCrAs2O7 structure showing the channels parallel to [001] in which the Cs+ cations are located.
Mentions: The structure of CsCrAs2O7 can be described as a three-dimensional [CrAs2O7]− anionic framework (Fig. 1 ▶) with channels extending parallel to [001] that are occupied by ten-coordinate Cs+ cations (Fig. 2 ▶).

Bottom Line: Caesium chromium(III) diarsenate(V), CsCrAs2O7, was prepared by solid-state reactions.The title structure consists of isolated CrO6 octa-hedra and As2O7 diarsenate groups, sharing corners to build up a three-dimensional [CrAs2O7](-) anionic framework.CsCrAs2O7 is isotypic with the monoclinic A (I) M (III) X 2O7 (A (I) = alkali metal; M (III) = Al, Cr, Fe; X = As, P) type I family of compounds crystallizing in the space group P21/c.

View Article: PubMed Central - HTML - PubMed

Affiliation: Laboratoire de Materiaux et Cristallochimie, Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092 Manar II Tunis, Tunisia.

ABSTRACT
Caesium chromium(III) diarsenate(V), CsCrAs2O7, was prepared by solid-state reactions. The title structure consists of isolated CrO6 octa-hedra and As2O7 diarsenate groups, sharing corners to build up a three-dimensional [CrAs2O7](-) anionic framework. In this framework, channels extending parallel to [001] are present in which the ten-coordinate Cs(+) ions reside. CsCrAs2O7 is isotypic with the monoclinic A (I) M (III) X 2O7 (A (I) = alkali metal; M (III) = Al, Cr, Fe; X = As, P) type I family of compounds crystallizing in the space group P21/c.

No MeSH data available.