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Related Concept Videos

Aromatic Hydrocarbon Cations: Structural Overview01:18

Aromatic Hydrocarbon Cations: Structural Overview

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Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
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Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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VSEPR Theory for Determination of Electron Pair Geometries
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Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
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Related Experiment Video

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Preparation of N-2-alkoxyvinylsulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
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Preparation of N-2-alkoxyvinylsulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines

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Pyridinium tosyl-ate.

Eric Cyriel Hosten1, Richard Betz1

  • 1Nelson Mandela University, Summerstrand Campus, Department of Chemistry, University Way, Summerstrand, PO Box 77000, Port Elizabeth, 6031, South Africa.

Iucrdata
|September 9, 2024
PubMed
Summary

This study details the crystal structure of pyridinium 4-methyl-benzene-sulfonate, revealing how hydrogen bonds link the compound's components into sheets. These findings contribute to understanding supramolecular chemistry and crystal engineering.

Area of Science:

  • Crystallography
  • Supramolecular Chemistry
  • Organic Chemistry

Background:

  • Pyridinium salts are organic compounds with diverse applications.
  • Understanding crystal packing is crucial for material properties.
  • Para-toluene-sulfonic acid is a common organic acid.

Purpose of the Study:

  • To determine the crystal structure of pyridinium 4-methyl-benzene-sulfonate.
  • To elucidate the intermolecular interactions governing crystal packing.
  • To provide insights into the solid-state behavior of this salt.

Main Methods:

  • Single-crystal X-ray diffraction was employed to analyze the crystal structure.
  • Analysis of hydrogen bonding (N-H···O and C-H···O) was performed.
  • Crystal structure visualization and analysis software were utilized.
Keywords:
crystal structurehydrogen bondpyridinium salt

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Main Results:

  • The crystal structure of pyridinium 4-methyl-benzene-sulfonate was successfully determined.
  • Classical N-H···O hydrogen bonds and weaker C-H···O contacts were identified.
  • These interactions organize the cationic and anionic components into layered sheets parallel to the ab plane.

Conclusions:

  • The crystal packing is dominated by hydrogen bonding interactions.
  • The observed sheet-like structure provides a basis for understanding the material's physical properties.
  • This work contributes to the knowledge of pyridinium salt crystal structures and supramolecular assembly.