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Related Concept Videos

Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism01:18

Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism

Birch reduction uses solvated electrons as reducing agents. The reaction converts benzene to 1,4-cyclohexadiene. The reaction proceeds by the transfer of a single electron to the ring to form a benzene radical anion. This anion is highly basic—it abstracts a proton from the alcohol to form a cyclohexadienyl radical. Another single electron transfer gives the cyclohexadienyl anion. A proton transfer from the alcohol forms 1,4-cyclohexadiene. Since this reduction occurs via radical anion...
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Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene01:15

Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene

Chlorination and bromination are important classes of electrophilic aromatic substitutions, where benzene reacts with chlorine or bromine in the presence of a Lewis acid catalyst to give halogenated substitution products. A Lewis acid such as aluminium chloride or ferric chloride catalyzes the chlorination, and ferric bromide catalyzes the bromination reactions. During the bromination of alkenes, bromine polarizes and becomes electrophilic. However, in the bromination of benzene, the bromine...
Directing and Steric Effects in Disubstituted Benzene Derivatives01:18

Directing and Steric Effects in Disubstituted Benzene Derivatives

When disubstituted benzenes undergo electrophilic substitution, the product distribution depends on the directing effect of both substituents. When the directing effects of both substituents reinforce each other, a single product is obtained. For example, bromination of p-nitrotoluene occurs ortho to the methyl group and meta to the nitro group, which is the same position, resulting in a single product. However, if the directing effects of the two groups oppose each other, the more strongly...
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In 1865, August Kekule suggested the structure of benzene according to the structural theory of organic chemistry based on the three assertions—formula of benzene is C6H6, all the hydrogens of benzene are equivalent, and each carbon must have four bonds due to its tetravalency.
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Simple aryl halides do not react with nucleophiles. However, nucleophilic aromatic substitutions can be forced under certain conditions, such as high temperatures or strong bases. The mechanism of substitution under such conditions involves the highly unstable and reactive benzyne intermediate. Benzyne contains equivalent carbon centers at both ends of the triple bond, each of which is equally susceptible to nucleophilic attack. This 50–50 distribution of products is confirmed through isotopic...

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Benzyl 3-[(E,E)-3-phenyl-prop-2-enyl-idene]dithio-carbazate.

M T H Tarafder, K A Crouse, M Toihidul Islam

    Acta Crystallographica. Section E, Structure Reports Online
    |January 5, 2011
    PubMed
    Summary

    This study details the EE configuration of a dithio-carbazate derivative (C17H16N2S2). Molecular structure and crystal packing reveal specific bonding and interactions, offering insights into chemical compound properties.

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    Isolating Free Carbenes, their Mixed Dimers and Organic Radicals

    Published on: April 19, 2019

    Area of Science:

    • Organic Chemistry
    • Crystallography
    • Chemical Physics

    Background:

    • Dithio-carbazate derivatives are a class of organic compounds with potential applications.
    • Understanding the precise molecular geometry and crystal packing is crucial for predicting chemical behavior.

    Purpose of the Study:

    • To elucidate the molecular structure and crystal packing of a specific dithio-carbazate derivative (C17H16N2S2).
    • To analyze the spatial arrangement and intermolecular interactions within the crystal lattice.

    Main Methods:

    • Single-crystal X-ray diffraction was employed to determine the three-dimensional structure.
    • Analysis of bond lengths, bond angles, and dihedral angles provided geometric insights.
    • Identification of intermolecular interactions, including hydrogen bonds and van der Waals forces.

    Main Results:

    • The compound exhibits an EE configuration around the C=C and C=N double bonds.
    • The 3-phenyl-prop-2-enyl-idene and dithio-carbazate fragments are nearly coplanar.
    • Intermolecular N-H⋯S hydrogen bonds and C-H⋯S interactions form dimers, further organized into sheets stabilized by C-H⋯π interactions.

    Conclusions:

    • The study provides a detailed structural characterization of the dithio-carbazate derivative.
    • The observed crystal packing suggests specific intermolecular forces governing the solid-state arrangement.
    • This structural data serves as a foundation for further investigations into the compound's properties and reactivity.