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Structural chemistry of layered lead halide perovskites containing single octahedral layers
We present a comprehensive review of the structural chemistry of hybrid lead halides of stoichiometry APbX (4), A (2)PbX(4) or A A′PbX (4), where A and A′ are organic ammonium cations and X = Cl, Br or I. These compounds may be considered as layered perovskites, containing isolated, infinite layers...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8256700/ https://www.ncbi.nlm.nih.gov/pubmed/34258000 http://dx.doi.org/10.1107/S2052252521005418 |
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author | McNulty, Jason A. Lightfoot, Philip |
author_facet | McNulty, Jason A. Lightfoot, Philip |
author_sort | McNulty, Jason A. |
collection | PubMed |
description | We present a comprehensive review of the structural chemistry of hybrid lead halides of stoichiometry APbX (4), A (2)PbX(4) or A A′PbX (4), where A and A′ are organic ammonium cations and X = Cl, Br or I. These compounds may be considered as layered perovskites, containing isolated, infinite layers of corner-sharing PbX (4) octahedra separated by the organic species. First, over 250 crystal structures were extracted from the CCDC and classified in terms of unit-cell metrics and crystal symmetry. Symmetry mode analysis was then used to identify the nature of key structural distortions of the [PbX (4)](∞) layers. Two generic types of distortion are prevalent in this family: tilting of the octahedral units and shifts of the inorganic layers relative to each other. Although the octahedral tilting modes are well known in the crystallography of purely inorganic perovskites, the additional layer-shift modes are shown to enormously enrich the structural options available in layered hybrid perovskites. Some examples and trends are discussed in more detail in order to show how the nature of the interlayer organic species can influence the overall structural architecture; although the main aim of the paper is to encourage workers in the field to make use of the systematic crystallographic methods used here to further understand and rationalize their own compounds, and perhaps to be able to design-in particular structural features in future work. |
format | Online Article Text |
id | pubmed-8256700 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-82567002021-07-12 Structural chemistry of layered lead halide perovskites containing single octahedral layers McNulty, Jason A. Lightfoot, Philip IUCrJ Lead Articles We present a comprehensive review of the structural chemistry of hybrid lead halides of stoichiometry APbX (4), A (2)PbX(4) or A A′PbX (4), where A and A′ are organic ammonium cations and X = Cl, Br or I. These compounds may be considered as layered perovskites, containing isolated, infinite layers of corner-sharing PbX (4) octahedra separated by the organic species. First, over 250 crystal structures were extracted from the CCDC and classified in terms of unit-cell metrics and crystal symmetry. Symmetry mode analysis was then used to identify the nature of key structural distortions of the [PbX (4)](∞) layers. Two generic types of distortion are prevalent in this family: tilting of the octahedral units and shifts of the inorganic layers relative to each other. Although the octahedral tilting modes are well known in the crystallography of purely inorganic perovskites, the additional layer-shift modes are shown to enormously enrich the structural options available in layered hybrid perovskites. Some examples and trends are discussed in more detail in order to show how the nature of the interlayer organic species can influence the overall structural architecture; although the main aim of the paper is to encourage workers in the field to make use of the systematic crystallographic methods used here to further understand and rationalize their own compounds, and perhaps to be able to design-in particular structural features in future work. International Union of Crystallography 2021-06-30 /pmc/articles/PMC8256700/ /pubmed/34258000 http://dx.doi.org/10.1107/S2052252521005418 Text en © McNulty and Lightfoot 2021 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited. |
spellingShingle | Lead Articles McNulty, Jason A. Lightfoot, Philip Structural chemistry of layered lead halide perovskites containing single octahedral layers |
title | Structural chemistry of layered lead halide perovskites containing single octahedral layers |
title_full | Structural chemistry of layered lead halide perovskites containing single octahedral layers |
title_fullStr | Structural chemistry of layered lead halide perovskites containing single octahedral layers |
title_full_unstemmed | Structural chemistry of layered lead halide perovskites containing single octahedral layers |
title_short | Structural chemistry of layered lead halide perovskites containing single octahedral layers |
title_sort | structural chemistry of layered lead halide perovskites containing single octahedral layers |
topic | Lead Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8256700/ https://www.ncbi.nlm.nih.gov/pubmed/34258000 http://dx.doi.org/10.1107/S2052252521005418 |
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