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Pressure-induced Jahn–Teller switch in the homoleptic hybrid perovskite [(CH(3))(2)NH(2)]Cu(HCOO)(3): orbital reordering by unconventional degrees of freedom
Through in situ, high-pressure X-ray diffraction experiments we have shown that the homoleptic perovskite-like coordination polymer [(CH(3))(2)NH(2)]Cu(HCOO)(3) undergoes a pressure-induced orbital reordering phase transition above 5.20 GPa. This transition is distinct from previously reported Jahn–...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8246535/ https://www.ncbi.nlm.nih.gov/pubmed/34277008 http://dx.doi.org/10.1039/d1tc01966j |
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author | Scatena, Rebecca Andrzejewski, Michał Johnson, Roger D. Macchi, Piero |
author_facet | Scatena, Rebecca Andrzejewski, Michał Johnson, Roger D. Macchi, Piero |
author_sort | Scatena, Rebecca |
collection | PubMed |
description | Through in situ, high-pressure X-ray diffraction experiments we have shown that the homoleptic perovskite-like coordination polymer [(CH(3))(2)NH(2)]Cu(HCOO)(3) undergoes a pressure-induced orbital reordering phase transition above 5.20 GPa. This transition is distinct from previously reported Jahn–Teller switching in coordination polymers, which required at least two different ligands that crystallize in a reverse spectrochemical series. We show that the orbital reordering phase transition in [(CH(3))(2)NH(2)]Cu(HCOO)(3) is instead primarily driven by unconventional octahedral tilts and shifts in the framework, and/or a reconfiguration of A-site cation ordering. These structural instabilities are unique to the coordination polymer perovskites, and may form the basis for undiscovered orbital reorientation phenomena in this broad family of materials. |
format | Online Article Text |
id | pubmed-8246535 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-82465352021-07-16 Pressure-induced Jahn–Teller switch in the homoleptic hybrid perovskite [(CH(3))(2)NH(2)]Cu(HCOO)(3): orbital reordering by unconventional degrees of freedom Scatena, Rebecca Andrzejewski, Michał Johnson, Roger D. Macchi, Piero J Mater Chem C Mater Chemistry Through in situ, high-pressure X-ray diffraction experiments we have shown that the homoleptic perovskite-like coordination polymer [(CH(3))(2)NH(2)]Cu(HCOO)(3) undergoes a pressure-induced orbital reordering phase transition above 5.20 GPa. This transition is distinct from previously reported Jahn–Teller switching in coordination polymers, which required at least two different ligands that crystallize in a reverse spectrochemical series. We show that the orbital reordering phase transition in [(CH(3))(2)NH(2)]Cu(HCOO)(3) is instead primarily driven by unconventional octahedral tilts and shifts in the framework, and/or a reconfiguration of A-site cation ordering. These structural instabilities are unique to the coordination polymer perovskites, and may form the basis for undiscovered orbital reorientation phenomena in this broad family of materials. The Royal Society of Chemistry 2021-06-09 /pmc/articles/PMC8246535/ /pubmed/34277008 http://dx.doi.org/10.1039/d1tc01966j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Scatena, Rebecca Andrzejewski, Michał Johnson, Roger D. Macchi, Piero Pressure-induced Jahn–Teller switch in the homoleptic hybrid perovskite [(CH(3))(2)NH(2)]Cu(HCOO)(3): orbital reordering by unconventional degrees of freedom |
title | Pressure-induced Jahn–Teller switch in the homoleptic hybrid perovskite [(CH(3))(2)NH(2)]Cu(HCOO)(3): orbital reordering by unconventional degrees of freedom |
title_full | Pressure-induced Jahn–Teller switch in the homoleptic hybrid perovskite [(CH(3))(2)NH(2)]Cu(HCOO)(3): orbital reordering by unconventional degrees of freedom |
title_fullStr | Pressure-induced Jahn–Teller switch in the homoleptic hybrid perovskite [(CH(3))(2)NH(2)]Cu(HCOO)(3): orbital reordering by unconventional degrees of freedom |
title_full_unstemmed | Pressure-induced Jahn–Teller switch in the homoleptic hybrid perovskite [(CH(3))(2)NH(2)]Cu(HCOO)(3): orbital reordering by unconventional degrees of freedom |
title_short | Pressure-induced Jahn–Teller switch in the homoleptic hybrid perovskite [(CH(3))(2)NH(2)]Cu(HCOO)(3): orbital reordering by unconventional degrees of freedom |
title_sort | pressure-induced jahn–teller switch in the homoleptic hybrid perovskite [(ch(3))(2)nh(2)]cu(hcoo)(3): orbital reordering by unconventional degrees of freedom |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8246535/ https://www.ncbi.nlm.nih.gov/pubmed/34277008 http://dx.doi.org/10.1039/d1tc01966j |
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