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Updated: May 24, 2026

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
(E)-1-Benzyl-idene-2,2-diphenyl-hydrazine.
This study details the crystal structure of a C(19)H(16)N(2) compound, revealing two independent molecules with E-configured C=N bonds. Analysis identified specific dihedral angles and intermolecular C-H⋯π interactions within the crystal lattice.
Area of Science:
- Crystallography
- Organic Chemistry
- Supramolecular Chemistry
Background:
- Understanding the three-dimensional structure of organic molecules is crucial for predicting their properties and reactivity.
- The C(19)H(16)N(2) compound's specific structural features, such as the C=N bond configuration and phenyl ring orientations, are key to its chemical behavior.
- Intermolecular interactions play a significant role in crystal packing and material properties.
Purpose of the Study:
- To elucidate the crystal structure of the title compound, C(19)H(16)N(2).
- To determine the configuration of the C=N bond and the spatial arrangement of phenyl rings.
- To identify and characterize any significant intermolecular interactions present in the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of bond lengths, bond angles, and dihedral angles provided detailed geometric information.
- Identification of intermolecular interactions, such as C-H⋯π interactions, was performed using crystallographic software.
Main Results:
- The asymmetric unit contains two independent molecules of C(19)H(16)N(2).
- Both molecules exhibit an E configuration around the C=N double bond.
- Dihedral angles between phenyl rings attached to the hydrazine group were measured as 81.00°(10) and 88.34°(8) for the two molecules.
- Intermolecular C-H⋯π interactions were observed, contributing to the crystal packing.
Conclusions:
- The crystal structure of C(19)H(16)N(2) has been successfully determined, providing precise geometric data.
- The E configuration of the C=N bond and the observed dihedral angles offer insights into the molecule's conformation.
- The presence of intermolecular C-H⋯π interactions highlights their role in stabilizing the crystal structure of this compound.
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