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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Katrusiak, Andrzej
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2024High-pressure observation of elusive iodoplumbic acid in different hydronium-hydrate solid formscitations
- 2024Temperature and volumetric effects on structural and dielectric properties of hybrid perovskitescitations
- 2024Unprecedented Richness of Temperature‐ and Pressure‐Induced Polymorphism in 1D Lead Iodide Perovskitecitations
- 2024Structural insight into piezo-solvatochromism of Reichardt's dyecitations
- 2023Helical model of compression and thermal expansioncitations
- 2023Engineering anomalous elastic properties of coordination polymers and their amorphization by employing flexible linkerscitations
- 2022Pressure-Driven Phase Transition in Two-Dimensional Perovskite MHy2PbBr4citations
- 2022Pressure-Driven Phase Transition in Two-Dimensional Perovskite MHy2PbBr4
- 2021Thermostructural and Elastic Properties of PbTe and Pb0.884Cd0.116Te: A Combined Low-Temperature and High-Pressure X-ray Diffraction Study of Cd-Substitution Effectscitations
- 2021Thermostructural and Elastic Properties of PbTe and Pb 0.884 Cd 0.116 Te: A Combined Low-Temperature and High-Pressure X-ray Diffraction Study of Cd-Substitution Effectscitations
- 2020High-pressure preference for reduced water content in porous zinc aspartate hydrates
- 2019Vitrification and New Phases in the Water:Pyrimidine Binary Eutectic Systemcitations
- 2019Dynamic Resolution of Piezosensitivity in Single Crystals of π-Conjugated Moleculescitations
- 2019Band Gap Engineering in MASnBr3and CsSnBr3 Perovskites: Mechanistic Insights through the Application of Pressurecitations
- 2019Environment-Controlled Postsynthetic Modifications of Iron Formate Frameworkscitations
- 2018Zone-Collapse Amorphization Mimicking the Negative Compressibility of a Porous Compoundcitations
- 2018A giant 2-dimensional dielectric response in a compressed hydrogen-bonded hybrid organic-inorganic saltcitations
- 2018Framework and coordination strain in two isostructural hybrid metal-organic perovskitescitations
- 2017Pressure inverse solubility and polymorphism of an edible γ-cyclodextrin-based metal-organic frameworkcitations
- 2016Mechanism of Pressure-Induced Phase Transitions, Amorphization, and Absorption-Edge Shift in Photovoltaic Methylammonium Lead Iodidecitations
- 2015Compressed Arsenolite As4O6 and Its Helium Clathrate As4O6·2Hecitations
- 2015Cascade of High-Pressure Transitions of Claudetite II and the First Polar Phase of Arsenic(III) Oxidecitations
- 2015Conformational conversion of 4,4′-bipyridinium in a hidden high-pressure phasecitations
- 2014Pressure-induced solvate crystallization of 1,4-Diazabicyclo[2.2.2]octane perchlorate with methanolcitations
- 2014Quasistatic disorder of NH⋯N bonds and elastic-properties relationship in 2-phenylimidazole crystalscitations
- 2008X-ray, FT-IR, ESI MS and PM5 studies of Schiff base of gossypol with allylamine and its complexes with alkali metal cations and perchlorate anioncitations
- 2008Anomalous protonic-glass evolution from ordered phase in NH...N hydrogen-bonded dabcoHBF ferroelectriccitations
- 2006Molecular interactions in crystalline dibromomethane and diiodomethane, and the stabilities of their high-pressure and low-temperature phasescitations
- 2006Disproportionation of pyrazine in NH<sup>+</sup>⋯ hydrogen-bonded complexes: New materials of exceptional dielectric responsecitations
- 2001Microscopic instabilities related to H<inf>3</inf>O<sup>+</sup> dynamics in monoguanidinium dioxonium trinitratecitations
Places of action
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article
Quasistatic disorder of NH⋯N bonds and elastic-properties relationship in 2-phenylimidazole crystals
Abstract
<p>The molecular aggregation in 2-phenylimidazole is analogous to that observed in the new class of NH⋯N bonded ferroelectrics and relaxors. Disordered H-atoms in NH⋯N hydrogen-bonded chains in the average crystal structure of 2-phenylimidazole persist to 100 K, but the relaxation time of this process is very long even above 340 K. Above 200 K, a gradual increase of the electric permittivity along chains testifies to the activation of dipolar fluctuations, associated with proton transfers in the quasistatic disordered chains. However, the chemical shifts of nitrogen atoms (equivalent according to the average crystal symmetry) remain clearly distinguished as protonated and unprotonated in <sup>15</sup>N NMR spectra up to 340 K at least. The 2-phenylimidazole crystal exhibits an unusual negative-linear thermal expansion (NTE) in the entire 140-340 K range, induced by subtle rotations of the NH⋯N bonded molecules. The NTE direction is the softest in the hydrostatically compressed crystal, which violates the inverse relationship rule of compression and thermal expansion. The crystal compression is monotonic, but clearly nonlinear, which is connected with the pressure enforced adjustments in the molecular packing between 0.1 MPa and 0.4 GPa, when small voids between molecules are eliminated. © 2014 American Chemical Society.</p>