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Updated: May 27, 2026

Preparation of N-(2-alkoxyvinyl)sulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
Published on: January 3, 2018
N,N'-Bis(2,5-dichloro-phen-yl)isophthalamide
Ruitao Zhu1, Jinlong Dong, Yu Zuo
1Department of Chemistry, Taiyuan Normal University, Taiyuan 030031, People's Republic of China.
This study details the crystal structure of a tetrachlorinated organic compound, C(20)H(12)Cl(4)N(2)O(2). Molecular analysis reveals specific twists in amide and dichloro-substituted benzene groups, with crystal packing stabilized by N-H⋯O interactions.
Area of Science:
- Organic Chemistry
- Crystallography
Background:
- Understanding the molecular structure and intermolecular interactions of organic compounds is crucial for predicting their physical and chemical properties.
- The specific arrangement of atoms and functional groups influences crystal packing and stability.
Purpose of the Study:
- To determine the precise three-dimensional structure of the title compound, C(20)H(12)Cl(4)N(2)O(2).
- To analyze the conformational preferences of the molecule, including the orientation of amide and substituted benzene rings.
- To investigate the intermolecular interactions responsible for the observed crystal packing.
Main Methods:
- Single-crystal X-ray diffraction was employed to elucidate the crystal structure.
- Analysis of bond lengths, bond angles, and torsion angles provided detailed conformational information.
- Identification of intermolecular interactions, such as hydrogen bonds, was performed.
Main Results:
- The asymmetric unit contains a half-molecule with a center of symmetry.
- Amide groups are twisted by approximately 27.5° relative to the central benzene ring.
- Dichloro-substituted benzene rings are twisted by approximately 8° with respect to the central ring.
- Crystal packing is stabilized by intermolecular N-H⋯O interactions.
Conclusions:
- The study provides a detailed structural characterization of C(20)H(12)Cl(4)N(2)O(2).
- The observed molecular conformation and crystal packing are governed by specific torsional angles and weak intermolecular forces.
- This structural data contributes to the understanding of structure-property relationships in chlorinated organic compounds.
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