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Related Concept Videos

Ionic Radii03:10

Ionic Radii

33.3K
Ionic radius is the measure used to describe the size of an ion. A cation always has fewer electrons and the same number of protons as the parent atom; it is smaller than the atom from which it is derived. For example, the covalent radius of an aluminum atom (1s22s22p63s23p1) is 118 pm, whereas the ionic radius of an Al3+ (1s22s22p6) is 68 pm. As electrons are removed from the outer valence shell, the remaining core electrons occupying smaller shells experience a greater effective nuclear...
33.3K
Ionic Bonds00:42

Ionic Bonds

129.2K
Overview
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 Compounds
Ionic bonds are reversible electrostatic interactions between ions...
129.2K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

19.9K
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...
19.9K
Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

68.0K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
68.0K
Ionic Crystal Structures02:42

Ionic Crystal Structures

16.9K
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...
16.9K
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

86.2K
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.
86.2K

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Updated: Jan 22, 2026

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
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Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids

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Epoxy-Containing Ionic Liquids with Tunable Functionality.

Tetsuya Tsuda1, Kazuki Iwasaki2, Kohei Kumagai2

  • 1Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan. ttsuda@chem.eng.osaka-u.ac.jp.

Molecules (Basel, Switzerland)
|July 20, 2019
PubMed
Summary
This summary is machine-generated.

New functional ionic liquids (ILs) with epoxy groups were synthesized. These novel ILs show potential as versatile reaction intermediates for future functional material development.

Keywords:
carbon dioxideepoxy groupfunctionality changeionic liquidphysicochemical property

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Area of Science:

  • Materials Science
  • Organic Chemistry
  • Electrochemistry

Background:

  • Ionic liquids (ILs) are versatile solvents and electrolytes.
  • Modifying the structure of common ILs is challenging.
  • Developing novel ILs with unique functionalities is crucial for advanced applications.

Purpose of the Study:

  • To synthesize new ionic liquids featuring an epoxy group on a piperidinium-type cation.
  • To investigate the potential of these novel ILs as reactive intermediates.
  • To establish a synthetic route for creating functionalized ILs.

Main Methods:

  • Anion exchange reaction of a synthesized piperidinium bromide salt.
  • Characterization of synthesized ionic liquids.
  • Exploration of the reactivity of the epoxy group.

Main Results:

  • Successful synthesis of novel piperidinium-based ionic liquids with epoxy groups.
  • Physicochemical properties (viscosity, ionic conductivity) were lower than conventional ILs.
  • The epoxy group demonstrated reactivity with reagents like CO2, enabling cation modification.

Conclusions:

  • The synthesized ILs are valuable as reaction intermediates due to their modifiable epoxy group.
  • This work presents a facile synthetic strategy for novel functional ionic liquids.
  • The approach facilitates the development of tailored ILs with unique properties and applications.