Serveur d'exploration sur le cobalt au Maghreb

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Synthesis, crystal structure and magnetic properties of a new fluoride carbonate Ba2Co(CO3)2F2

Identifieur interne : 000B25 ( Main/Exploration ); précédent : 000B24; suivant : 000B26

Synthesis, crystal structure and magnetic properties of a new fluoride carbonate Ba2Co(CO3)2F2

Auteurs : A. Ben Ali [France] ; V. Maisonneuve [France] ; S. Kodjikian [France] ; L. S. Smiri [Tunisie] ; M. Leblanc [France]

Source :

RBID : Pascal:02-0230687

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English descriptors

Abstract

The structure of Ba2Co(CO3)2F2, obtained by hydrothermal synthesis, is determined from X-ray single crystal diffraction data (1085 unique reflections, R = 0.034, RW = 0.078). Ba2Co(CO3)2F2 is orthorhombic, space group Pbca (Z = 4), with a = 6.6226(6), b = 11.494(2), c = 9.021(2) Å and V = 686.7(4) Å3. It can be described from infinite (010) layers of [CoO4F2] octahedra and CO2-3 entities or from [BaO3F]∞ sheets of [BaO7F3] polyhedra. Antiferromagnetic order occurs below TN 6 K.


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Le document en format XML

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<title xml:lang="en" level="a">Synthesis, crystal structure and magnetic properties of a new fluoride carbonate Ba
<sub>2</sub>
Co(CO
<sub>3</sub>
)
<sub>2</sub>
F
<sub>2</sub>
</title>
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<s1>Laboratoire des Fluorures, UMR 6010 CNRS, Faculté des Sciences, Université du Maine, avenue O. Messiaen</s1>
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<title xml:lang="en" level="a">Synthesis, crystal structure and magnetic properties of a new fluoride carbonate Ba
<sub>2</sub>
Co(CO
<sub>3</sub>
)
<sub>2</sub>
F
<sub>2</sub>
</title>
<author>
<name sortKey="Ben Ali, A" sort="Ben Ali, A" uniqKey="Ben Ali A" first="A." last="Ben Ali">A. Ben Ali</name>
<affiliation wicri:level="4">
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<s1>Laboratoire des Fluorures, UMR 6010 CNRS, Faculté des Sciences, Université du Maine, avenue O. Messiaen</s1>
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<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
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<country>France</country>
<placeName>
<region type="region" nuts="2">Pays de la Loire</region>
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<orgName type="university">Université du Maine</orgName>
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<name sortKey="Kodjikian, S" sort="Kodjikian, S" uniqKey="Kodjikian S" first="S." last="Kodjikian">S. Kodjikian</name>
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<s1>Laboratoire des Fluorures, UMR 6010 CNRS, Faculté des Sciences, Université du Maine, avenue O. Messiaen</s1>
<s2>72085 Le Mans</s2>
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<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
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<country>France</country>
<placeName>
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<name sortKey="Leblanc, M" sort="Leblanc, M" uniqKey="Leblanc M" first="M." last="Leblanc">M. Leblanc</name>
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<s1>Laboratoire des Fluorures, UMR 6010 CNRS, Faculté des Sciences, Université du Maine, avenue O. Messiaen</s1>
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<sZ>2 aut.</sZ>
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<sZ>5 aut.</sZ>
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<keywords scheme="KwdEn" xml:lang="en">
<term>Antiferromagnetism</term>
<term>Barium compounds</term>
<term>Chemical preparation</term>
<term>Cobalt compounds</term>
<term>Crystal structure</term>
<term>Experimental study</term>
<term>Fluorocarbonates</term>
<term>Hydrothermal synthesis</term>
<term>Magnetic susceptibility</term>
<term>Magnetization</term>
<term>XRD</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Etude expérimentale</term>
<term>Préparation chimique</term>
<term>Synthèse hydrothermale</term>
<term>Diffraction RX</term>
<term>Structure cristalline</term>
<term>Susceptibilité magnétique</term>
<term>Aimantation</term>
<term>Antiferromagnétisme</term>
<term>Baryum composé</term>
<term>Cobalt composé</term>
<term>6166F</term>
<term>7530C</term>
<term>Ba2Co(CO3)2F2</term>
<term>Ba C Co F O</term>
<term>Fluorocarbonate</term>
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<front>
<div type="abstract" xml:lang="en">The structure of Ba
<sub>2</sub>
Co(CO
<sub>3</sub>
)
<sub>2</sub>
F
<sub>2</sub>
, obtained by hydrothermal synthesis, is determined from X-ray single crystal diffraction data (1085 unique reflections, R = 0.034, R
<sub>W</sub>
= 0.078). Ba
<sub>2</sub>
Co(CO
<sub>3</sub>
)
<sub>2</sub>
F
<sub>2</sub>
is orthorhombic, space group Pbca (Z = 4), with a = 6.6226(6), b = 11.494(2), c = 9.021(2) Å and V = 686.7(4) Å
<sup>3</sup>
. It can be described from infinite (010) layers of [CoO
<sub>4</sub>
F
<sub>2</sub>
] octahedra and CO
<sup>2-</sup>
<sub>3</sub>
entities or from [BaO
<sub>3</sub>
F]∞ sheets of [BaO
<sub>7</sub>
F
<sub>3</sub>
] polyhedra. Antiferromagnetic order occurs below T
<sub>N</sub>
6 K.</div>
</front>
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<li>Tunisie</li>
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<region>
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<region name="Pays de la Loire">
<name sortKey="Ben Ali, A" sort="Ben Ali, A" uniqKey="Ben Ali A" first="A." last="Ben Ali">A. Ben Ali</name>
</region>
<name sortKey="Kodjikian, S" sort="Kodjikian, S" uniqKey="Kodjikian S" first="S." last="Kodjikian">S. Kodjikian</name>
<name sortKey="Leblanc, M" sort="Leblanc, M" uniqKey="Leblanc M" first="M." last="Leblanc">M. Leblanc</name>
<name sortKey="Maisonneuve, V" sort="Maisonneuve, V" uniqKey="Maisonneuve V" first="V." last="Maisonneuve">V. Maisonneuve</name>
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