Related Experiment Video
Updated: Feb 16, 2026
![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)
Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
4-Methyl-1-(4-methylbenzylidene)thio-semicarbazide
1Microscale Science Institute, Department of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, People's Republic of China.
This study details the crystal structure of a novel sulfur-containing compound. Its planar conformation is stabilized by intramolecular hydrogen bonds, forming dimers and sheets in the crystal lattice.
Area of Science:
- Crystallography
- Organic Chemistry
- Molecular Structure
Background:
- Understanding molecular conformation and intermolecular interactions is crucial in crystal engineering.
- Thio-semicarbazide derivatives are known for diverse biological activities and coordination chemistry.
Purpose of the Study:
- To synthesize and characterize a novel compound derived from 4-methyl-benzaldehyde and 4-methyl-thio-semicarbazide.
- To elucidate the crystal structure and intermolecular interactions of the title compound.
Main Methods:
- Single crystal X-ray diffraction analysis.
- Synthesis of the title compound via condensation reaction.
Main Results:
- The synthesized compound, C(10)H(13)N(3)S, exhibits an approximately planar structure.
- An intramolecular N-H⋯N hydrogen bond stabilizes the molecular conformation, forming an S(5) ring.
- In the crystal lattice, inversion dimers are formed via N-H⋯S hydrogen bonds, which further assemble into (100) sheets through additional N-H⋯S interactions.
Conclusions:
- The study provides a detailed structural analysis of a novel thio-semicarbazide derivative.
- The observed hydrogen bonding network highlights the importance of weak interactions in crystal packing and supramolecular assembly.
More Related Videos
09:54Safety Precautions and Operating Procedures in an ABSL-4 Laboratory: 1. Biosafety Level 4 Suit Laboratory Suite Entry and Exit Procedures
Published on: October 3, 2016
09:36Safety Precautions and Operating Procedures in an ABSL-4 Laboratory: 4. Medical Imaging Procedures
Published on: October 3, 2016
Related Concept Videos
Dipeptidyl Peptidase 4 Inhibitors
Piaget's Stage 4 of Cognitive Development
Abstract Reasoning and Hypothetical-Deductive Thinking
Unlike the concrete operational...
Amides to Amines: LiAlH4 Reduction
Amide reduction requires two equivalents of the reducing agent, acting as a source of hydride ions. As shown in the figure, the reaction is initiated with a nucleophilic attack by the hydride ion at the carbonyl carbon to form a tetrahedral intermediate.
Nitriles to Amines: LiAlH4 Reduction
As shown below, the mechanism involves three steps. Firstly, the hydride ion acting as a nucleophile attacks the nitrile carbon to form an anion. In the second step, a second equivalent of the hydride ion attacks the anion to...
Acid Halides to Alcohols: LiAlH4 Reduction
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
Criteria for Aromaticity and the Hückel 4n + 2 Rule
For the first time, Eric Hückel, a German chemical physicist, derived a set of structural features for a compound to be classified as aromatic. This is now known as Hückel’s rule or the 4n +...