Penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6)

The title non-stoichiometric penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6), was prepared from the elements in an evacuated silica ampoule. It adopts the Nb(5)Sn(2)Si-type structure (space group I4/mcm, Pearson symbol tI32), a ternary ordered superstructure of the W(5)Si(3) type. Amo...

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Autores principales: Oshchapovsky, Igor, Pavlyuk, Volodymyr, Dmytriv, Grygoriy, Harbrecht, Bernd
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2013
Materias:
Inorganic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3914033/
https://www.ncbi.nlm.nih.gov/pubmed/24526938
http://dx.doi.org/10.1107/S1600536813033618
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author Oshchapovsky, Igor
Pavlyuk, Volodymyr
Dmytriv, Grygoriy
Harbrecht, Bernd
author_facet Oshchapovsky, Igor
Pavlyuk, Volodymyr
Dmytriv, Grygoriy
Harbrecht, Bernd
author_sort Oshchapovsky, Igor
collection PubMed
description The title non-stoichiometric penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6), was prepared from the elements in an evacuated silica ampoule. It adopts the Nb(5)Sn(2)Si-type structure (space group I4/mcm, Pearson symbol tI32), a ternary ordered superstructure of the W(5)Si(3) type. Among the four independent crystallographic positions, three are fully occupied by La (Wyckoff 16k), La (4b), and Pb (8h) and one is occupied by a statistical mixture [occupancy ratio 0.394 (12):0.606 (12)] of Zn and Pb (4a). The structure is constructed by face-sharing 10-vertex polyhedra around the unmixed Pb sites. These fragments enclose channels of trans-face-sharing tetra­gonal anti­prisms occupied by the disordered Zn and Pb sites.
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spelling pubmed-39140332014-02-13 Penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6) Oshchapovsky, Igor Pavlyuk, Volodymyr Dmytriv, Grygoriy Harbrecht, Bernd Acta Crystallogr Sect E Struct Rep Online Inorganic Papers The title non-stoichiometric penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6), was prepared from the elements in an evacuated silica ampoule. It adopts the Nb(5)Sn(2)Si-type structure (space group I4/mcm, Pearson symbol tI32), a ternary ordered superstructure of the W(5)Si(3) type. Among the four independent crystallographic positions, three are fully occupied by La (Wyckoff 16k), La (4b), and Pb (8h) and one is occupied by a statistical mixture [occupancy ratio 0.394 (12):0.606 (12)] of Zn and Pb (4a). The structure is constructed by face-sharing 10-vertex polyhedra around the unmixed Pb sites. These fragments enclose channels of trans-face-sharing tetra­gonal anti­prisms occupied by the disordered Zn and Pb sites. International Union of Crystallography 2013-12-18 /pmc/articles/PMC3914033/ /pubmed/24526938 http://dx.doi.org/10.1107/S1600536813033618 Text en © Oshchapovsky et al. 2014 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Inorganic Papers
Oshchapovsky, Igor
Pavlyuk, Volodymyr
Dmytriv, Grygoriy
Harbrecht, Bernd
Penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6)
title Penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6)
title_full Penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6)
title_fullStr Penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6)
title_full_unstemmed Penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6)
title_short Penta­lanthanum zinc diplumbide, La(5)Zn(1−x)Pb(2+x) (x ≃ 0.6)
title_sort penta­lanthanum zinc diplumbide, la(5)zn(1−x)pb(2+x) (x ≃ 0.6)
topic Inorganic Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3914033/
https://www.ncbi.nlm.nih.gov/pubmed/24526938
http://dx.doi.org/10.1107/S1600536813033618
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