Structure determination of α-La6W2O15

M. H. Chambrier; R. M. Ibberson; F. Goutenoire

doi:10.1016/j.jssc.2010.03.043

Structure determination of α-La₆W₂O₁₅

M. H. Chambrier, R. M. Ibberson, F. Goutenoire

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The structure of the high temperature alpha form of La₆W₂O₁₅ has been determined ab-initio from high temperature laboratory X-ray and neutron time-of-flight data. This tungstate crystallizes in the non-centrosymmetric orthorhombic space group (No. 20) C222₁, with Z=2, a=12.6250(2) Å, b=9.1875(1) Å, c=5.9688(1) Å. The structure comprises [O₂La₃] infinite ribbons and is better described by the structural formula [O₂La₃]₂[WO_5.5]₂. Using this description we can understand the strong structural similarity of the present compound with compounds of the general composition BiM₂AO₆ (M=Cu, Mg, Zn, Mn, Cd, Ca, Pb; A=P, As, V) described as [O₂M₂Bi][AO₄]. The [WO_5.5] entity implies oxygen disorder in the material.

Original language	English
Pages (from-to)	1297-1302
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	183
Issue number	6
DOIs	https://doi.org/10.1016/j.jssc.2010.03.043
State	Published - Jun 2010
Externally published	Yes

Keywords

Oxide
Phase transition
X-ray and neutron diffraction

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10.1016/j.jssc.2010.03.043

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title = "Structure determination of α-La6W2O15",

abstract = "The structure of the high temperature alpha form of La6W2O15 has been determined ab-initio from high temperature laboratory X-ray and neutron time-of-flight data. This tungstate crystallizes in the non-centrosymmetric orthorhombic space group (No. 20) C2221, with Z=2, a=12.6250(2) {\AA}, b=9.1875(1) {\AA}, c=5.9688(1) {\AA}. The structure comprises [O2La3] infinite ribbons and is better described by the structural formula [O2La3]2[WO5.5]2. Using this description we can understand the strong structural similarity of the present compound with compounds of the general composition BiM2AO6 (M=Cu, Mg, Zn, Mn, Cd, Ca, Pb; A=P, As, V) described as [O2M2Bi][AO4]. The [WO5.5] entity implies oxygen disorder in the material.",

keywords = "Oxide, Phase transition, X-ray and neutron diffraction",

author = "Chambrier, {M. H.} and Ibberson, {R. M.} and F. Goutenoire",

year = "2010",

month = jun,

doi = "10.1016/j.jssc.2010.03.043",

language = "English",

volume = "183",

pages = "1297--1302",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Elsevier",

number = "6",

}

TY - JOUR

T1 - Structure determination of α-La6W2O15

AU - Chambrier, M. H.

AU - Ibberson, R. M.

AU - Goutenoire, F.

PY - 2010/6

Y1 - 2010/6

N2 - The structure of the high temperature alpha form of La6W2O15 has been determined ab-initio from high temperature laboratory X-ray and neutron time-of-flight data. This tungstate crystallizes in the non-centrosymmetric orthorhombic space group (No. 20) C2221, with Z=2, a=12.6250(2) Å, b=9.1875(1) Å, c=5.9688(1) Å. The structure comprises [O2La3] infinite ribbons and is better described by the structural formula [O2La3]2[WO5.5]2. Using this description we can understand the strong structural similarity of the present compound with compounds of the general composition BiM2AO6 (M=Cu, Mg, Zn, Mn, Cd, Ca, Pb; A=P, As, V) described as [O2M2Bi][AO4]. The [WO5.5] entity implies oxygen disorder in the material.

AB - The structure of the high temperature alpha form of La6W2O15 has been determined ab-initio from high temperature laboratory X-ray and neutron time-of-flight data. This tungstate crystallizes in the non-centrosymmetric orthorhombic space group (No. 20) C2221, with Z=2, a=12.6250(2) Å, b=9.1875(1) Å, c=5.9688(1) Å. The structure comprises [O2La3] infinite ribbons and is better described by the structural formula [O2La3]2[WO5.5]2. Using this description we can understand the strong structural similarity of the present compound with compounds of the general composition BiM2AO6 (M=Cu, Mg, Zn, Mn, Cd, Ca, Pb; A=P, As, V) described as [O2M2Bi][AO4]. The [WO5.5] entity implies oxygen disorder in the material.

KW - Oxide

KW - Phase transition

KW - X-ray and neutron diffraction

UR - http://www.scopus.com/inward/record.url?scp=77953133221&partnerID=8YFLogxK

U2 - 10.1016/j.jssc.2010.03.043

DO - 10.1016/j.jssc.2010.03.043

M3 - Article

AN - SCOPUS:77953133221

SN - 0022-4596

VL - 183

SP - 1297

EP - 1302

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 6

ER -

Structure determination of α-La₆W₂O₁₅

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Keywords

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