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Related Concept Videos

Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
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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...
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Aldehydes are named based on the systematic nomenclature rules set by the IUPAC. For acyclic aldehydes, the longest carbon chain containing the aldehydic (–CHO) group is considered the parent chain. The aldehyde is named by replacing the last letter “e” in the hydrocarbon name with “al”. For instance, a simple, seven-carbon-membered acyclic aldehyde is called heptanal, derived from heptane. The carbon chain is numbered starting from the aldehydic carbon, although the aldehydic carbon’s locant...
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Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles01:11

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N,N,N',N'-Tetra-methyl-phthalamide.

Adel Hamada, Yamina Boudinar, Adel Beghidja

    Acta Crystallographica. Section E, Structure Reports Online
    |September 13, 2012
    PubMed
    Summary
    This summary is machine-generated.

    This study details the crystal structure of a C(12)H(16)N(2)O(2) compound, revealing two unique molecular arrangements in the asymmetric unit. Analysis highlights specific dihedral angles and weak intermolecular interactions, including C-H⋯O hydrogen bonds and C-H⋯π interactions.

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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

    Area of Science:

    • Crystallography
    • Organic Chemistry
    • Supramolecular Chemistry

    Background:

    • Understanding the solid-state structure of organic compounds is crucial for predicting their physical and chemical properties.
    • The title compound, C(12)H(16)N(2)O(2), was synthesized and its crystal structure investigated.

    Purpose of the Study:

    • To elucidate the crystal structure of the title compound, C(12)H(16)N(2)O(2).
    • To analyze the molecular conformation, including dihedral angles between functional groups and the aromatic ring.
    • To identify and characterize intermolecular interactions present in the crystal lattice.

    Main Methods:

    • Single-crystal X-ray diffraction was employed to determine the crystal structure.
    • The crystal structure was solved and refined using standard crystallographic techniques.
    • Analysis of dihedral angles and intermolecular contacts (hydrogen bonds, π-interactions) was performed.

    Main Results:

    • The compound crystallized from toluene, with two independent molecules in the asymmetric unit.
    • Dihedral angles between amide groups and the benzene ring were measured, showing variations between the two independent molecules (e.g., 60.87° and 54.08° in one, 60.13° and 64.64° in the other).
    • Weak C-H⋯O hydrogen bonds and C-H⋯π interactions were identified as key features of the crystal packing.

    Conclusions:

    • The crystal structure of C(12)H(16)N(2)O(2) has been successfully determined.
    • The conformational flexibility of the molecule is evident from the different dihedral angles observed in the independent molecules.
    • The identified weak interactions play a significant role in stabilizing the crystal structure.