Related Experiment Video
Updated: Jul 5, 2026
06:44
From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Structural transformation due to Co-host inclusion in ionic clathrate hydrates
Kyuchul Shin1, Sukjeong Choi, Jong-Ho Cha
1Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong yuseong-gu, Daejeon 305-701, Republic of Korea.
Journal of the American Chemical Society
|May 16, 2008
Summary
Co-hosts can alter clathrate hydrate structures, tuning cage size and number. This modification enhances properties and creates pathways for proton or electron delivery.
Area of Science:
- Materials Science
- Chemistry
- Physical Chemistry
Background:
- Clathrate hydrates are inclusion compounds with cage-like structures.
- Controlling the properties of clathrate hydrates is crucial for various applications.
- Understanding host-guest interactions is key to manipulating hydrate structures.
Purpose of the Study:
- To investigate the role of co-hosts in modifying the structure of ionized clathrate hydrates.
- To explore methods for tuning cage dimensions and increasing cage numbers in hydrates.
- To assess the impact of co-host-induced structural changes on physicochemical properties.
Main Methods:
- Crystallography and structural analysis.
- Lattice distortion analysis.
- Structural transformation studies.
Main Results:
- Co-hosts effectively restructure the host water framework of clathrate hydrates.
- Lattice distortion allows for tuning of cage dimensions.
- Structural transformation promotes an increased total number of cages.
- Co-host-induced modifications improve physicochemical properties.
Conclusions:
- Co-hosts are crucial for engineering the structure and properties of ionized clathrate hydrates.
- The ability to tune cage dimensions and numbers opens new avenues for hydrate applications.
- The modified host framework can serve as a functional pathway for charge transport.
Related Concept Videos
03:34Ionic Compounds: Formulas and Nomenclature
An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
02:42Ionic Crystal Structures
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
02:48Ionic Bonding and Electron Transfer
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
00:42Ionic Bonds
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.Opposing Charges Hold Ions Together in Ionic CompoundsIonic bonds are reversible electrostatic interactions between ions with...
00:42Ionic Bonds
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.Opposing Charges Hold Ions Together in Ionic CompoundsIonic bonds are reversible electrostatic interactions between ions with...
02:54Molecular and Ionic Solids
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...