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Title: High-Pressure Behavior of Silver Fluorides up to 40 GPa

Abstract

A combined experimental–theoretical study of silver(I) and silver(II) fluorides under high pressure is reported. For AgI, the CsCl-type structure is stable to at least 39 GPa; the overtone of the IR-active mode is seen in the Raman spectrum. Its AgIIF2 sibling is a unique compound in many ways: it is more covalent than other known difluorides, crystallizes in a layered structure, and is enormously reactive. Using X-ray diffraction and guided by theoretical calculations (density functional theory), we have been able to elucidate crystal structures of high-pressure polymorphs of AgF2. The transition from ambient pressure to an unprecedented nanotubular structure takes place via an intermediate orthorhombic layered structure, which lacks an inversion center. Here, the observed phase transitions are discussed within the broader framework of the fluorite → cotunnite → Ni2In series, which has been seen for other metal difluorides.

Authors:
 [1];  [1];  [1];  [2];  [1]; ORCiD logo [3];  [1];  [4];  [1];  [5]; ORCiD logo [1]
  1. Univ. of Warsaw (Poland)
  2. Univ. of Warsaw (Poland); Cardinal Stefan Wyszyński Univ., Warsaw (Poland)
  3. Jožef Stefan Inst., Ljubljana (Slovenia)
  4. Univ. of Chicago, Chicago, IL (United States)
  5. Carnegie Inst. of Washington, Washington, D.C. (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
OSTI Identifier:
1416571
Grant/Contract Number:  
AC02-06CH11357; NA0001974; FG02-94ER14466; EAR-1128799
Resource Type:
Accepted Manuscript
Journal Name:
Inorganic Chemistry
Additional Journal Information:
Journal Volume: 56; Journal Issue: 23; Journal ID: ISSN 0020-1669
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
ENGLISH
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; anions; crystal structure; chemical structure; physical and chemical processes; phase transitions

Citation Formats

Grzelak, Adam, Gawraczyński, Jakub, Jaroń, Tomasz, Kurzydłowski, Dominik, Budzianowski, Armand, Mazej, Zoran, Leszczyński, Piotr J., Prakapenka, Vitali B., Derzsi, Mariana, Struzhkin, Viktor V., and Grochala, Wojciech. High-Pressure Behavior of Silver Fluorides up to 40 GPa. United States: N. p., 2017. Web. doi:10.1021/acs.inorgchem.7b02528.
Grzelak, Adam, Gawraczyński, Jakub, Jaroń, Tomasz, Kurzydłowski, Dominik, Budzianowski, Armand, Mazej, Zoran, Leszczyński, Piotr J., Prakapenka, Vitali B., Derzsi, Mariana, Struzhkin, Viktor V., & Grochala, Wojciech. High-Pressure Behavior of Silver Fluorides up to 40 GPa. United States. https://doi.org/10.1021/acs.inorgchem.7b02528
Grzelak, Adam, Gawraczyński, Jakub, Jaroń, Tomasz, Kurzydłowski, Dominik, Budzianowski, Armand, Mazej, Zoran, Leszczyński, Piotr J., Prakapenka, Vitali B., Derzsi, Mariana, Struzhkin, Viktor V., and Grochala, Wojciech. Wed . "High-Pressure Behavior of Silver Fluorides up to 40 GPa". United States. https://doi.org/10.1021/acs.inorgchem.7b02528. https://www.osti.gov/servlets/purl/1416571.
@article{osti_1416571,
title = {High-Pressure Behavior of Silver Fluorides up to 40 GPa},
author = {Grzelak, Adam and Gawraczyński, Jakub and Jaroń, Tomasz and Kurzydłowski, Dominik and Budzianowski, Armand and Mazej, Zoran and Leszczyński, Piotr J. and Prakapenka, Vitali B. and Derzsi, Mariana and Struzhkin, Viktor V. and Grochala, Wojciech},
abstractNote = {A combined experimental–theoretical study of silver(I) and silver(II) fluorides under high pressure is reported. For AgI, the CsCl-type structure is stable to at least 39 GPa; the overtone of the IR-active mode is seen in the Raman spectrum. Its AgIIF2 sibling is a unique compound in many ways: it is more covalent than other known difluorides, crystallizes in a layered structure, and is enormously reactive. Using X-ray diffraction and guided by theoretical calculations (density functional theory), we have been able to elucidate crystal structures of high-pressure polymorphs of AgF2. The transition from ambient pressure to an unprecedented nanotubular structure takes place via an intermediate orthorhombic layered structure, which lacks an inversion center. Here, the observed phase transitions are discussed within the broader framework of the fluorite → cotunnite → Ni2In series, which has been seen for other metal difluorides.},
doi = {10.1021/acs.inorgchem.7b02528},
journal = {Inorganic Chemistry},
number = 23,
volume = 56,
place = {United States},
year = {Wed Nov 15 00:00:00 EST 2017},
month = {Wed Nov 15 00:00:00 EST 2017}
}

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Works referencing / citing this record:

The Jahn-Teller Distortion at High Pressure: The Case of Copper Difluoride
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Fluorides of silver under large compression
text, January 2020