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Related Concept Videos

Oxymercuration-Reduction of Alkenes02:36

Oxymercuration-Reduction of Alkenes

Oxymercuration–reduction of alkenes is one of the major reactions converting alkenes to alcohols. It involves the hydration of alkenes with mercuric acetate in a mixture of tetrahydrofuran and water, forming an organomercury adduct. This is followed by a demercuration step in which the adduct is reduced to an alcohol using sodium borohydride.
Structural Isomerism02:34

Structural Isomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
Structure of Amines01:19

Structure of Amines

The hybridized nitrogen atom in amines possesses a lone pair of electrons and is bound to three substituents with a bond angle of around 108°, which is less than the tetrahedral angle of 109.5°. However, the C–N–H bond angle is slightly larger at 112°, with a carbon–nitrogen bond length of 147 pm. This carbon–nitrogen bond length of of amines is longer than the carbon–oxygen bond of alcohols (143 pm) but shorter than alkanes’ carbon–carbon bond (154 pm). These aspects are illustrated in Figure...
Nomenclature of Secondary and Tertiary Amines01:12

Nomenclature of Secondary and Tertiary Amines

The secondary and tertiary amines are derivatives of ammonia, where two and three of its hydrogens are replaced by alkyl groups, respectively. Secondary and tertiary amines can be symmetrical with identical alkyl groups attached to the nitrogen atom or unsymmetrical when more than one type of alkyl group is present. The standard nomenclature of secondary and tertiary amines is similar to the names given to the primary amines. They are generally named alkylamines. As depicted in Figure 1, for...
Preparation of Acid Anhydrides01:07

Preparation of Acid Anhydrides

One of the methods for preparing symmetrical or unsymmetrical acid anhydrides involves the treatment of acid chlorides with the sodium salt of carboxylic acids. The reaction proceeds via a nucleophilic acyl substitution.
The carboxylate ion acts as a nucleophile that attacks the carbonyl carbon of the acid chloride to form a tetrahedral intermediate. Subsequently, the re-formation of the carbonyl group with the loss of the chloride ion as a leaving group leads to the formation of an acid...
Alkyl Halides02:45

Alkyl Halides

Structural Properties
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...

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A Study of the Complexation of Mercury(II) with Dicysteinyl Tetrapeptides by Electrospray Ionization Mass Spectrometry
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Published on: January 8, 2016

Bis(2-methyl-4-nitro-anilinium) tetra-chloridomercurate(II).

Jasrotia Dinesh, Melanie Rademeyer, David G Billing

    Acta Crystallographica. Section E, Structure Reports Online
    |May 18, 2011
    PubMed
    Summary

    This study reveals how 2-methyl-4-nitro-anilinium cations and mercury tetrachloride anions self-assemble into unique bilayer structures. These structures are stabilized by specific hydrogen bonding interactions, offering insights into crystal engineering.

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    Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

    Published on: February 15, 2016

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    Published on: January 8, 2016

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    Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
    06:35

    Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

    Published on: February 15, 2016

    Area of Science:

    • Crystal Engineering
    • Supramolecular Chemistry
    • Coordination Chemistry

    Background:

    • Anilinium salts and metal halides are fundamental building blocks in materials science.
    • Understanding self-assembly mechanisms is crucial for designing novel functional materials.
    • The interplay between organic cations and inorganic anions dictates crystal packing and properties.

    Purpose of the Study:

    • To investigate the self-assembly behavior of the title compound, (C(7)H(9)N(2)O(2))(2)[HgCl(4)].
    • To elucidate the structural characteristics and bonding interactions within the assembled crystal lattice.
    • To explore the formation of cationic organic bilayers and anionic inorganic layers.

    Main Methods:

    • Single-crystal X-ray diffraction analysis was employed to determine the crystal structure.
    • Analysis of intermolecular interactions, including hydrogen bonding (C-H⋯O and N(+)-H⋯Cl-Hg), was performed.
    • The coordination geometry of the [HgCl(4)](2-) anion was examined.

    Main Results:

    • The title compound self-assembles into a supramolecular structure featuring cationic organic bilayers of 2-methyl-4-nitro-anilinium.
    • These organic layers are interleaved with anionic inorganic layers composed of distorted tetrahedral [HgCl(4)](2-) groups.
    • Strong charge-assisted N(+)-H⋯Cl-Hg hydrogen bonds link the organic and inorganic components, while C-H⋯O bonds connect organic sheets.

    Conclusions:

    • The study successfully characterized a novel self-assembled structure formed by 2-methyl-4-nitro-anilinium cations and [HgCl(4)](2-) anions.
    • The observed hydrogen bonding network plays a critical role in stabilizing the bilayer architecture.
    • The findings contribute to the understanding of crystal engineering principles involving organic-inorganic hybrid materials.