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Synthesis, structure determination and calorimetric study of new caesium hydrogen selenate arsenate Cs<sub>4</sub>(SeO<sub>4</sub>)(HSeO<sub>4</sub>)<sub>2</sub>(H<sub>3</sub>AsO<sub>4</sub>)
| dc.contributor.author | AMRI, M. | |
| dc.contributor.author | ZOUARI, N. | |
| dc.contributor.author | MHIRI, T. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GRAVEREAU, Pierre | |
| dc.date.issued | 2009 | |
| dc.identifier.issn | 0925-8388 | |
| dc.description.abstractEn | A new compound, Cs<sub>4</sub>(SeO<sub>4</sub>)(HSeO<sub>4</sub>)<sub>2</sub>(H<sub>3</sub>AsO<sub>4</sub>), was synthesized from aqueous solution of CsHSeO<sub>4</sub>/Cs<sub>3</sub>H(SeO<sub>4</sub>)<sub>2</sub>/H<sub>3</sub>AsO<sub>4</sub> (80.5%). The compound was characterized by X-ray single-crystal analysis, with the following crystal data: monoclinic, space group <i>P</i>2<sub>1</sub>, <i>a</i> = 5.973(1) Å, <i>b</i> = 13.691(3) Å, <i>c</i> = 11.910(3) Å and <i>β</i> = 94.867(1)°. The compound has a unit cell volume 970.39(4) Å<sup>3</sup> and two formula units per cell, giving a calculated density of 3.780 g cm<sup>−3</sup>. The structure was solved from 5493 independent reflections and refined with 218 parameters yielded weighted residuals of 0.1243 and 0.0474 based on <i>F</i><sup>2</sup> and values, respectively. This compound have a coordination number of caesium of 11, with Cs–O distances from 2.945(7) to 3.915(16) Å. As and Se atoms form the individual tetrahedra with different H-bonding connectivity in this structure. AsO<sub>4</sub>–SeO<sub>4</sub> layers with attached SeO<sub>4</sub> groups are present. The infrared spectra of the new compound Cs<sub>4</sub>(SeO<sub>4</sub>)(HSeO<sub>4</sub>)<sub>2</sub>(H<sub>3</sub>AsO<sub>4</sub>) recorded at room temperature in the frequency range 4000–400 cm<sup>−1</sup> confirm the presence of AsO<sub>4</sub><sup>3−</sup> and SeO<sub>4</sub><sup>2−</sup> groups in the same crystal. The differential scanning calorimetry (DSC) and the thermogravimetry (TG) curves show two phase transitions at 411 and 418 K in this material.</p> | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Inorganic materials | |
| dc.subject.en | Mixed selenates and arsenates | |
| dc.subject.en | Crystal structure | |
| dc.subject.en | IR spectroscopy | |
| dc.subject.en | Calorimetric analysis | |
| dc.title.en | Synthesis, structure determination and calorimetric study of new caesium hydrogen selenate arsenate Cs<sub>4</sub>(SeO<sub>4</sub>)(HSeO<sub>4</sub>)<sub>2</sub>(H<sub>3</sub>AsO<sub>4</sub>) | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jallcom.2008.10.078 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Alloys and Compounds | |
| bordeaux.page | 68-75 | |
| bordeaux.volume | 477 | |
| bordeaux.issue | 1-2 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00408169 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00408169v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Alloys%20and%20Compounds&rft.date=2009&rft.volume=477&rft.issue=1-2&rft.spage=68-75&rft.epage=68-75&rft.eissn=0925-8388&rft.issn=0925-8388&rft.au=AMRI,%20M.&ZOUARI,%20N.&MHIRI,%20T.&GRAVEREAU,%20Pierre&rft.genre=article |
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