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The pressure respon...
The pressure response of Jahn–Teller-distorted Prussian blue analogues
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- Boström, Hanna L. B., 1991- (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Max Planck Institute for Solid State Research, Germany
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Cairns, Andrew B. (author)
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Chen, Muzi (author)
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Daisenberger, Dominik (author)
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Ridley, Christopher J. (author)
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Funnell, Nicholas P. (author)
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Chemical Science. - 2041-6520 .- 2041-6539. ; 15:9, s. 3155-3164
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
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- Jahn–Teller (JT) distorted CuII-containing compounds often display interesting structural and functional behaviour upon compression. We use high-pressure X-ray and neutron diffraction to investigate four JT-distorted Prussian blue analogues: Cu[Co(CN)6]0.67, CuPt(CN)6, and ACuCo(CN)6 (A = Rb, Cs), where the first two were studied in both their hydrated and dehydrated forms. All compounds are less compressible than the JT-inactive MnII-based counterparts, indicating a coupling between the electronic and mechanical properties. The effect is particularly strong for Cu[Co(CN)6]0.67, where the local JT distortions are uncorrelated (so-called orbital disorder). This sample amorphises at 0.5 GPa when dehydrated. CuPt(CN)6 behaves similarly to the MnII-analogues, with phase transitions at around 1 GPa and low sensitivity to water. For ACuCo(CN)6, the JT distortions reduce the propensity for phase transitions, although RbCuCo(CN)6 transitions to a new phase (P2/m) around 3 GPa. Our results have a bearing on both the topical Prussian blue analogues and the wider field of flexible frameworks.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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