Related Experiment Video
Updated: May 3, 2026

Facile Preparation of 2Z,4E-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
(E)-1,1-Diphenyl-2-(thio-phen-2-yl-methyl-idene)hydrazine
Blanca M Cabrera-Vivas1, Marcos Flores-Alamo2, Ruth Meléndrez-Luévano1
1Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla 72570, Puebla, Pue., Mexico.
This study details the crystal structure of C17H14N2S, revealing two independent molecules with similar conformations. These molecules form a three-dimensional network through specific intermolecular interactions in the solid state.
Area of Science:
- Crystallography
- Chemical Physics
- Materials Science
Background:
- Understanding molecular conformation and packing is crucial for predicting material properties.
- Crystallographic studies provide fundamental insights into the solid-state behavior of organic compounds.
Purpose of the Study:
- To elucidate the crystal structure of the title compound, C17H14N2S.
- To analyze the molecular conformations and intermolecular interactions within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the crystal structure.
- Analysis of bond lengths, bond angles, and dihedral angles provided conformational details.
- Identification of intermolecular interactions, such as C-H⋯π bonds, was performed.
Main Results:
- The asymmetric unit contains two crystallographically independent molecules of C17H14N2S.
- The dihedral angles between phenyl rings were measured as 89.32(5)° and 82.80(5)° in the two molecules.
- C-H⋯π interactions were observed, linking molecules into a 3D network.
Conclusions:
- The crystal structure of C17H14N2S is characterized by two similar, independent molecular conformations.
- Intermolecular C-H⋯π interactions play a significant role in organizing the molecules into a stable three-dimensional framework.
Related Concept Videos
Diazonium Group Substitution: –OH and –H
E1 Reaction: Kinetics and Mechanism
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
Aldehydes and Ketones with HCN: Cyanohydrin Formation Overview
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism
Structure of Conjugated Dienes
Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the...

![Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F60786.jpg&w=3840&q=50)