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Related Concept Videos

Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles01:11

Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles

Naming Amides
The IUPAC and common names of amides are derived from the parent carboxylic acid, by replacing the suffix “oic acid” and “ic acid,” respectively, with “amide.” In the following example, the IUPAC name ethanamide is derived from ethanoic acid, and the common name, acetamide, is obtained from acetic acid.
Carboxylic Acids to Methylesters: Alkylation using Diazomethane01:33

Carboxylic Acids to Methylesters: Alkylation using Diazomethane

Carboxylic acids react with diazomethane in an ether solvent via alkylation at the carboxylate oxygen atom to give methyl esters of the corresponding acid with excellent yields.
Nomenclature of Alkynes02:39

Nomenclature of Alkynes

Alkynes are unsaturated hydrocarbons characterized by the presence of carbon-carbon triple bonds and have a general formula CnH2n-2. The nomenclature of alkynes follows a set of rules similar to alkanes and alkenes; however, alkynes bear the suffix "-yne" instead of "-ane" or "-ene." There are two approaches to naming alkynes:
Diels–Alder Reaction: Characteristics of Dienes01:29

Diels–Alder Reaction: Characteristics of Dienes

The Diels–Alder reaction brings together a diene and a dienophile to form a six-membered ring. Both components have unique characteristics that influence the rate of the reaction.
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is more stable, the...
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction01:16

[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
Structure of Conjugated Dienes01:16

Structure of Conjugated Dienes

Introduction
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 double...

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Related Experiment Video

Updated: May 13, 2026

Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization
07:28

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Published on: November 27, 2015

2-[(Dimethyl-amino)-methyl-idene]propane-dinitrile.

Rajni Kant1, Vivek K Gupta, Kamini Kapoor

  • 1X-ray Crystallography Laboratory, Post-Graduate Department of Physics & Electronics, University of Jammu, Jammu Tawi 180 006, India.

Acta Crystallographica. Section E, Structure Reports Online
|March 12, 2013
PubMed
Summary

This study details the molecular structure of C6H7N3, revealing a slight twist between its dimethyl-amino and propane-dinitrile groups. The molecules form a 3D network in the crystal through hydrogen bonds.

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Area of Science:

  • Crystallography
  • Organic Chemistry
  • Molecular Structure

Background:

  • Understanding the precise three-dimensional arrangement of atoms in organic molecules is crucial for predicting their properties and reactivity.
  • The propane-dinitrile and dimethyl-amino moieties are common functional groups in various chemical compounds.

Purpose of the Study:

  • To elucidate the crystal structure and intermolecular interactions of the title molecule C6H7N3.
  • To quantify the spatial relationship between the dimethyl-amino group and the propane-dinitrile fragment.

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 and analysis of intermolecular interactions, specifically hydrogen bonds, were performed.

Main Results:

  • The crystal structure of C6H7N3 was determined, revealing a specific molecular conformation.
  • A dihedral angle of 7.95° was measured between the mean plane of the dimethyl-amino group and the propane-dinitrile fragment.
  • Weak C-H⋯N hydrogen bonds were identified, connecting molecules into an extended three-dimensional network.

Conclusions:

  • The study provides precise crystallographic data for C6H7N3, highlighting a non-planar arrangement between key functional groups.
  • The observed hydrogen bonding network plays a significant role in the stabilization of the crystal lattice.