Synthesis and Crystal Structure of Bi6.67(PO4)4O4Oxyphosphate: The Bi6 M 2+(PO4)4O4and Bi6.5 A +0.5(PO4)4O4Series
Identifieur interne : 000349 ( France/Analysis ); précédent : 000348; suivant : 000350Synthesis and Crystal Structure of Bi6.67(PO4)4O4Oxyphosphate: The Bi6 M 2+(PO4)4O4and Bi6.5 A +0.5(PO4)4O4Series
Auteurs : Mustafa Ketatni [France] ; Olivier Mentre [France] ; Francis Abraham [France] ; Fouzia Kzaiber [Maroc] ; Boucha B Mernari [Maroc]Source :
- Journal of Solid State Chemistry [ 0022-4596 ] ; 1998.
Abstract
Single crystals of a new bismuth oxyphosphate were isolated and X-ray investigated, leading to the formula Bi6.67(PO4)4O4. Its crystal structure was refined using 2624 independent reflections in theP1space group,a=9.195(15) Å,b=7.552(5) Å,c=6.933(4) Å,α=112.2(1)°,β=93.9(1)°,γ=106.9(1)°,Z=1, with the finalR=0.049,Rw=0.060. It consists of infinite chains running parallel to theaaxis formed by the linkage of BiO5, BiO6, and BiO8polyhedra. These chains are connected by BiO8polyhedra, in which the central atom partially occupies the 1(a) inversion center. That produces (Bi6.67O20)20−∞slabs parallel to the (ac) plane. Finally, the cohesion between the layers is provided by the interconnection of PO3−4species. This phase was previously evidenced during the Bi2O3–BiPO4phase diagram study and behaves on cooling as an incongruently melting compound stable above 910°C. It was therefore assigned to the 2Bi2O3–7BiPO4composition very close to our corresponding 2Bi2O3–6BiPO4(Bi6.67P4O20) revised stoichiometry. Pure polycrystalline samples were room temperature stabilized by substitution of several cations for a substantial part of bismuth. This yielded the new series Bi6MP4O20(M=Sr2+, Cd2+, Ca2+, Pb2+) and Bi6.5A0.5P4O20(A=Li+, Na+, K+) presented in the aforementioned phase diagram study. The substitution involves only the bismuth atom labeled Bi(4) because of its peculiar role within the framework.
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DOI: 10.1006/jssc.1998.7841
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level="a" type="main" xml:lang="en">Synthesis and Crystal Structure of Bi6.67(PO4)4O4Oxyphosphate: The Bi6 M 2+(PO4)4O4and Bi6.5 A +0.5(PO4)4O4Series</title><author><name sortKey="Ketatni, Mustafa" sort="Ketatni, Mustafa" uniqKey="Ketatni M" first="Mustafa" last="Ketatni">Mustafa Ketatni</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Cristallochimie et Physicochimie du Solide URA, CNRS 452, ENSCL, Université des Sciences et Technologies de Lille, 108, 59652, Villeneuve d'Ascq Cedex</wicri:regionArea><placeName><region type="region" nuts="2">Hauts-de-France</region><region type="old region" nuts="2">Nord-Pas-de-Calais</region><settlement type="city">Villeneuve d'Ascq</settlement></placeName></affiliation></author><author><name sortKey="Mentre, Olivier" sort="Mentre, Olivier" uniqKey="Mentre O" first="Olivier" last="Mentre">Olivier Mentre</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Cristallochimie et Physicochimie du Solide URA, CNRS 452, ENSCL, Université des Sciences et Technologies de Lille, 108, 59652, Villeneuve d'Ascq Cedex</wicri:regionArea><placeName><region type="region" nuts="2">Hauts-de-France</region><region type="old region" nuts="2">Nord-Pas-de-Calais</region><settlement type="city">Villeneuve d'Ascq</settlement></placeName></affiliation></author><author><name sortKey="Abraham, Francis" sort="Abraham, Francis" uniqKey="Abraham F" first="Francis" last="Abraham">Francis Abraham</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Cristallochimie et Physicochimie du Solide URA, CNRS 452, ENSCL, Université des Sciences et Technologies de Lille, 108, 59652, Villeneuve d'Ascq Cedex</wicri:regionArea><placeName><region type="region" nuts="2">Hauts-de-France</region><region type="old region" nuts="2">Nord-Pas-de-Calais</region><settlement 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Chemistry</title><title level="j" type="abbrev">YJSSC</title><idno type="ISSN">0022-4596</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1998">1998</date><biblScope unit="volume">139</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="274">274</biblScope><biblScope unit="page" to="280">280</biblScope></imprint><idno type="ISSN">0022-4596</idno></series><idno type="istex">8F3D6003E47DB5952800FAAEE558D1C9C74A77BA</idno><idno type="DOI">10.1006/jssc.1998.7841</idno><idno type="PII">S0022-4596(98)97841-0</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-4596</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Single crystals of a new bismuth oxyphosphate were isolated and X-ray investigated, leading to the formula Bi6.67(PO4)4O4. Its crystal structure was refined using 2624 independent reflections in theP1space group,a=9.195(15) Å,b=7.552(5) Å,c=6.933(4) Å,α=112.2(1)°,β=93.9(1)°,γ=106.9(1)°,Z=1, with the finalR=0.049,Rw=0.060. It consists of infinite chains running parallel to theaaxis formed by the linkage of BiO5, BiO6, and BiO8polyhedra. These chains are connected by BiO8polyhedra, in which the central atom partially occupies the 1(a) inversion center. That produces (Bi6.67O20)20−∞slabs parallel to the (ac) plane. Finally, the cohesion between the layers is provided by the interconnection of PO3−4species. This phase was previously evidenced during the Bi2O3–BiPO4phase diagram study and behaves on cooling as an incongruently melting compound stable above 910°C. It was therefore assigned to the 2Bi2O3–7BiPO4composition very close to our corresponding 2Bi2O3–6BiPO4(Bi6.67P4O20) revised stoichiometry. Pure polycrystalline samples were room temperature stabilized by substitution of several cations for a substantial part of bismuth. This yielded the new series Bi6MP4O20(M=Sr2+, Cd2+, Ca2+, Pb2+) and Bi6.5A0.5P4O20(A=Li+, Na+, K+) presented in the aforementioned phase diagram study. The substitution involves only the bismuth atom labeled Bi(4) because of its peculiar role within the framework.</div></front></TEI><affiliations><list><country><li>France</li><li>Maroc</li></country><region><li>Hauts-de-France</li><li>Nord-Pas-de-Calais</li></region><settlement><li>Villeneuve d'Ascq</li></settlement></list><tree><country name="France"><region name="Hauts-de-France"><name sortKey="Ketatni, Mustafa" sort="Ketatni, Mustafa" uniqKey="Ketatni M" first="Mustafa" last="Ketatni">Mustafa Ketatni</name></region><name sortKey="Abraham, Francis" sort="Abraham, Francis" uniqKey="Abraham F" first="Francis" last="Abraham">Francis Abraham</name><name sortKey="Mentre, Olivier" sort="Mentre, Olivier" uniqKey="Mentre O" first="Olivier" last="Mentre">Olivier Mentre</name></country><country name="Maroc"><noRegion><name sortKey="Kzaiber, Fouzia" sort="Kzaiber, Fouzia" uniqKey="Kzaiber F" first="Fouzia" last="Kzaiber">Fouzia Kzaiber</name></noRegion><name sortKey="Mernari, Boucha B" sort="Mernari, Boucha B" uniqKey="Mernari B" first="Boucha B" last="Mernari">Boucha B Mernari</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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