IndiumV3, Russie, Analysis, bibRecord, 000596

The incommensurate structure of K3In(PO4)2

Identifieur interne : 000596 ( Russie/Analysis ); précédent : 000595; suivant : 000597

The incommensurate structure of K3In(PO4)2

Auteurs : RBID : Pascal:03-0212107

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Matériau modulé, Phase incommensurable, Potassium phosphate, Indium phosphate, Diffraction RX, Structure cristalline, Distribution ion, Occupation site, Polyèdre coordination, 6144F, K3In(PO4)2, In K O P.

English descriptors

KwdEn :
- Coordination polyhedron, Crystal structure, Experimental study, Incommensurate phases, Indium phosphates, Ion distribution, Modulated materials, Potassium phosphates, Site occupation, XRD.

Abstract

The incommensurately modulated structure of K₃In(PO₄)₂ has been solved and refined. The origin of the modulation relates to the ordering of K cations within the hexagonal close packing of the PO₄ anions. The driving forces for the modulation of the other cations are In-P and K-P interactions. The modulation of O atoms of rigid PO₄ units follows the cations in order to stabilize the InO₆ octahedron. It is shown that the previously published three-dimensional structure refined from powder diffraction data obtained at room temperature is an average structure. Therefore the incommensurately modulated phase of K₃In(PO₄)₂ is the only one that has been unequivocally identified at room temperature. The origin of the modulation is discussed in comparison with the structures of Na₃InP₂, α- and β-Na₃In(PO₄)₂, Na₃Fe(PO₄)₂ and Rb₃In(PO₄)₂.

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Pascal:03-0212107

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">The incommensurate structure of K<sub>3</sub>
In(PO<sub>4</sub>
)<sub>2</sub>
</title>
<author><name sortKey="Arakcheeva, Lla" uniqKey="Arakcheeva L">Lla Arakcheeva</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Université de Lausanne, Institut de Cristallographie, BSP Dorigny</s1>
<s2>1015 Lausanne</s2>
<s3>CHE</s3>
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<region nuts="3" type="region">Canton de Vaud</region>
</placeName>
</affiliation>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Baikov Institute of Metallurgy, RAS</s1>
<s2>119991 Moscow</s2>
<s3>RUS</s3>
<sZ>1 aut.</sZ>
</inist:fA14>
<country>Russie</country>
<placeName><settlement type="city">Moscou</settlement>
<region>District fédéral central</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Chapuis, Gervais" uniqKey="Chapuis G">Gervais Chapuis</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Université de Lausanne, Institut de Cristallographie, BSP Dorigny</s1>
<s2>1015 Lausanne</s2>
<s3>CHE</s3>
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<author><name sortKey="Petricek, Vaclav" uniqKey="Petricek V">Vaclav Petricek</name>
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<author><name sortKey="Dusek, Michal" uniqKey="Dusek M">Michal Dusek</name>
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<author><name sortKey="Schonleber, Andreas" uniqKey="Schonleber A">Andreas Schönleber</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Coordination polyhedron</term>
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<term>Incommensurate phases</term>
<term>Indium phosphates</term>
<term>Ion distribution</term>
<term>Modulated materials</term>
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<term>Site occupation</term>
<term>XRD</term>
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<term>Matériau modulé</term>
<term>Phase incommensurable</term>
<term>Potassium phosphate</term>
<term>Indium phosphate</term>
<term>Diffraction RX</term>
<term>Structure cristalline</term>
<term>Distribution ion</term>
<term>Occupation site</term>
<term>Polyèdre coordination</term>
<term>6144F</term>
<term>K3In(PO4)2</term>
<term>In K O P</term>
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<front><div type="abstract" xml:lang="en">The incommensurately modulated structure of K<sub>3</sub>
In(PO<sub>4</sub>
)<sub>2</sub>
 has been solved and refined. The origin of the modulation relates to the ordering of K cations within the hexagonal close packing of the PO<sub>4</sub>
 anions. The driving forces for the modulation of the other cations are In-P and K-P interactions. The modulation of O atoms of rigid PO<sub>4</sub>
 units follows the cations in order to stabilize the InO<sub>6</sub>
 octahedron. It is shown that the previously published three-dimensional structure refined from powder diffraction data obtained at room temperature is an average structure. Therefore the incommensurately modulated phase of K<sub>3</sub>
In(PO<sub>4</sub>
)<sub>2</sub>
 is the only one that has been unequivocally identified at room temperature. The origin of the modulation is discussed in comparison with the structures of Na<sub>3</sub>
InP<sub>2</sub>
, α- and β-Na<sub>3</sub>
In(PO<sub>4</sub>
)<sub>2</sub>
, Na<sub>3</sub>
Fe(PO<sub>4</sub>
)<sub>2</sub>
 and Rb<sub>3</sub>
In(PO<sub>4</sub>
)<sub>2</sub>
.</div>
</front>
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<fC01 i1="01" l="ENG"><s0>The incommensurately modulated structure of K<sub>3</sub>
In(PO<sub>4</sub>
)<sub>2</sub>
 has been solved and refined. The origin of the modulation relates to the ordering of K cations within the hexagonal close packing of the PO<sub>4</sub>
 anions. The driving forces for the modulation of the other cations are In-P and K-P interactions. The modulation of O atoms of rigid PO<sub>4</sub>
 units follows the cations in order to stabilize the InO<sub>6</sub>
 octahedron. It is shown that the previously published three-dimensional structure refined from powder diffraction data obtained at room temperature is an average structure. Therefore the incommensurately modulated phase of K<sub>3</sub>
In(PO<sub>4</sub>
)<sub>2</sub>
 is the only one that has been unequivocally identified at room temperature. The origin of the modulation is discussed in comparison with the structures of Na<sub>3</sub>
InP<sub>2</sub>
, α- and β-Na<sub>3</sub>
In(PO<sub>4</sub>
)<sub>2</sub>
, Na<sub>3</sub>
Fe(PO<sub>4</sub>
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<s2>NK</s2>
<s5>05</s5>
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<s2>NK</s2>
<s5>05</s5>
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<fC03 i1="09" i2="3" l="ENG"><s0>Site occupation</s0>
<s5>09</s5>
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<fC03 i1="10" i2="X" l="FRE"><s0>Polyèdre coordination</s0>
<s5>10</s5>
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<s5>10</s5>
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<fC03 i1="10" i2="X" l="SPA"><s0>Poliedro coordinación</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE"><s0>6144F</s0>
<s2>PAC</s2>
<s4>INC</s4>
<s5>56</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE"><s0>K3In(PO4)2</s0>
<s4>INC</s4>
<s5>92</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE"><s0>In K O P</s0>
<s4>INC</s4>
<s5>93</s5>
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The incommensurate structure of K3In(PO4)2

The incommensurate structure of K3In(PO4)2

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri