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The Fate of Molecular Systems at High-Pressure

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Computational and Theoretical Chemistry".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 3821

Special Issue Editors


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Guest Editor
LENS European Laboratory for Non-Linear Spectroscopy; Dipartimento di Chimica “Ugo Schiff” dell’Università degli Studi di Firenze, 50019 Sesto Fiorentino FI, Italy
Interests: molecular systems

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Guest Editor
National Institute of Optics (CNR-INO) and European Laboratory for Non Linear Spectroscopy (LENS), 50019 Sesto Fiorentino FI, Italy
Interests: condensed matter physics

Special Issue Information

Dear Colleagues,

Pressure is an incredibly powerful tool for tuning interactions among molecules to make them comparable to intramolecular interactions. Besides the intermolecular distances, relative molecular orientations and conformations can also be changed with major consequences for the electronic density redistribution. Many different phenomena ranging from structural phase transitions to chemical reactions, including metallization and the emergence of exotic magnetic or superconductive phases, are observed as a consequence of the internal energy increase. In addition, the list of new materials synthesized under high pressure and quenchable at ambient conditions as stable or kinetically trapped metastable phases increases every day. The great advances in the diamond anvil cell (DAC) performances, combined with major improvements in optical spectroscopic and X-ray diffraction techniques (which also benefit from the last generation synchrotron sources), as well as the increased predictive power and accuracy of ab initio computational methods, gave access to a novel paradigm of transformations in dense molecular matter that is of paramount interest for fundamental physics and materials science.

The aim of this Special Issue is to present a collection of articles depicting some of the most recent findings achieved by compressing molecular systems in DACs and in computer simulations. Ideally, this collection should give an overview of the rich variety of transformations occurring under high-pressure conditions, encompassing many different research areas and topics in both fundamental and applied sciences.

Prof. Dr. Roberto Bini
Dr. Mario Santoro
Guest Editors

Manuscript Submission Information

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Keywords

  • Phase diagrams
  • High-pressure techniques
  • Solid-state chemistry
  • Ab initio simulations
  • Crystals prediction
  • Novel materials
  • Superconductivity
  • Ices
  • Nanothreads
  • Hydrogen
  • Hydrides

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Published Papers (1 paper)

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Review

21 pages, 6832 KiB  
Review
Pressure-Induced Polymerization: Addition and Condensation Reactions
by Fang Li, Jingqin Xu, Yajie Wang, Haiyan Zheng and Kuo Li
Molecules 2021, 26(24), 7581; https://doi.org/10.3390/molecules26247581 - 14 Dec 2021
Cited by 11 | Viewed by 3337
Abstract
Under pressure of 1–100 GPa, unsaturated organic molecules tend to form covalent bond to each other for a negative enthalpy change, which often produces polymeric materials with extended carbon skeleton. The polymerization reactions typically happen in crystal, which promotes the topochemical process. This [...] Read more.
Under pressure of 1–100 GPa, unsaturated organic molecules tend to form covalent bond to each other for a negative enthalpy change, which often produces polymeric materials with extended carbon skeleton. The polymerization reactions typically happen in crystal, which promotes the topochemical process. This review summarized the topochemical polymerization processes of several alkynes, aromatics, and alkynylphenyl compounds, including the critical crystal structures before the reaction, bonding process, and the structure of the products. Secondly, this review also summarized the condensation reaction identified in the polymerization process, including the elimination of small molecules such as NH3, etc. Full article
(This article belongs to the Special Issue The Fate of Molecular Systems at High-Pressure)
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