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Related Concept Videos

Ionic Crystal Structures02:42

Ionic Crystal Structures

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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...
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Structures of Solids02:22

Structures of Solids

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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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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...
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Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

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Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than...
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Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and...
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Molecular Shapes01:18

Molecular Shapes

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Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.
Two regions of electron density in a diatomic...
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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
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Mesoscopic structural organization in triphilic room temperature ionic liquids.

Olga Russina, Fabrizio Lo Celso, Marco Di Michiel

    Faraday Discussions
    |March 20, 2014
    PubMed
    Summary
    This summary is machine-generated.

    Room temperature ionic liquids (RTILs) with fluorous tails exhibit complex mesoscopic structures. These triphilic materials, containing polar, hydrophobic, and fluorophilic parts, show high structural compartmentalization for advanced applications.

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    Area of Science:

    • Materials Science
    • Supramolecular Chemistry
    • Physical Chemistry

    Background:

    • Room temperature ionic liquids (RTILs) are recognized for their unique mesoscopic order due to amphiphilicity.
    • Understanding the mesoscopic behavior of RTILs is crucial for their technological applications.

    Purpose of the Study:

    • To investigate the mesoscopic structural complexity of RTILs with medium-length fluorous tails.
    • To explore the implications of triphilic character on RTIL self-assembly and compartmentalization.

    Main Methods:

    • The study focuses on the structural analysis of specific RTILs.
    • Characterization of mesoscopic organization in triphilic ionic liquids.

    Main Results:

    • RTILs with fluorous tails display an additional level of mesoscopic complexity.
    • These triphilic materials exhibit significant structural compartmentalization.
    • Segregation of polar, hydrophobic, and fluorophilic moieties is observed.

    Conclusions:

    • The inherent triphilic nature of these RTILs leads to enhanced mesoscopic structural compartmentalization.
    • This unique characteristic opens avenues for novel smart material applications.