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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
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Halogen⋯Halogen Interactions: Nature, Directionality and Applications
Binoy K Saha1, Ragima V P Veluthaparambath1, Vibha Krishna G1
1Department of Chemistry, Pondicherry University, Puducherry, 605014, India.
Chemistry, an Asian Journal
|March 3, 2023
Summary
Halogen bonding, crucial in crystal engineering, involves interactions between F, Cl, Br, and I. This review clarifies their nature, geometry, and applications in supramolecular chemistry.
Area of Science:
- Crystal Engineering
- Supramolecular Chemistry
- Chemical Physics
Background:
- Halogen bonding (halogen⋯halogen interactions) is a key non-covalent interaction in crystal engineering.
- Significant debate exists regarding the precise nature and geometric preferences of these interactions.
- The behavior of halogens (F, Cl, Br, I) can differ based on their position in the periodic table and the atoms they are bonded to.
Purpose of the Study:
- To review and clarify the diverse types of halogen bonding, including homo-halogen⋯halogen, hetero-halogen⋯halogen, and halogen⋯halide interactions.
- To discuss the factors influencing the nature and preferred geometries of these interactions.
- To explore the interchangeability of halogen bonding motifs with other supramolecular synthons and functional groups.
Main Methods:
- Literature review of existing studies on halogen bonding.
- Analysis of crystallographic data and computational studies (implied).
- Discussion of various interaction types and their characteristics.
Main Results:
- Detailed examination of halogen⋯halogen and halogen⋯halide interactions, their natures, and geometries.
- Identification of different interaction motifs and their prevalence.
- Discussion on the interchangeability of halogen bonding with other interactions and functional groups.
Conclusions:
- Halogen bonding is a versatile interaction with predictable geometric preferences.
- Understanding these interactions is crucial for designing crystalline materials.
- The review highlights successful applications of halogen bonding in various chemical contexts.
Keywords:
Charge densityHalogen⋅⋅⋅halogen interactionsSelf-assemblyStatistical analysisSupramolecular chemistryMore Related Videos
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