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Related Concept Videos

Lewis Structures of Molecular Compounds and Polyatomic Ions02:54

Lewis Structures of Molecular Compounds and Polyatomic Ions

43.6K
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
43.6K
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview01:26

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview

3.7K
Nitrous acid and nitric acids are two types of acids containing nitrogen, among which nitrous acid is weaker than nitric acid. Nitrous acid with a pKa value of 3.37 ionizes in water to give a nitrite ion and the hydronium ion.
The nitrous acid is unstable. Hence, it is formed in situ from a solution of sodium nitrite and cold aqueous acids such as hydrochloric or sulfuric acid. In an acidic solution, the –OH group of nitrous acid undergoes protonation to give oxonium ion, followed by...
3.7K
Amines to Sulfonamides: The Hinsberg Test01:23

Amines to Sulfonamides: The Hinsberg Test

4.2K
The Hinsberg test is a method to identify primary, secondary and tertiary amines, named after its pioneer, Oscar Hinsberg. Here, amines are treated with benzenesulfonyl chloride, also known as the Hinsberg reagent, in the presence of an excess of aqueous base, followed by acidification. Based on the nature of the amines, different changes are observed.
Generally, a primary amine reacts with the Hinsberg reagent to produce an N-substituted benzenesulfonamide. The electron-withdrawing sulfonyl...
4.2K
Basicity of Heterocyclic Aromatic Amines01:25

Basicity of Heterocyclic Aromatic Amines

6.7K
Heterocyclic amines, where the N atom is a part of an alicyclic system, are similar in basicity to alkylamines. Interestingly, the heterocyclic amine having a nitrogen atom as part of an aromatic ring has much less basicity than its corresponding alicyclic counterpart. For this reason, as presented in Figure 1, piperidine (pKb = 2.8) is significantly more basic than pyridine (pKb = 8.8).
6.7K
Structural Isomerism02:34

Structural Isomerism

21.2K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
21.2K
Diazonium Group Substitution: –OH and –H01:19

Diazonium Group Substitution: –OH and –H

3.2K
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.
3.2K

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Related Experiment Videos

Isonicotinium hydrogen sulfate.

Li-Zhuang Chen1

  • 1Ordered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online
|May 18, 2011
PubMed
Summary
This summary is machine-generated.

The crystal structure of a novel compound was determined. Intermolecular hydrogen bonds involving nitrogen, oxygen, and hydrogen atoms stabilize its crystal lattice.

Related Experiment Videos

Area of Science:

  • Crystallography
  • Solid-state chemistry

Background:

  • Understanding the crystal structure of compounds is fundamental in chemistry.
  • Hydrogen bonding plays a crucial role in stabilizing crystal lattices.

Purpose of the Study:

  • To determine the crystal structure of the title compound, C(6)H(6)NO(2) (+)·HSO(4) (-).
  • To identify the types of intermolecular interactions stabilizing the crystal structure.

Main Methods:

  • Single-crystal X-ray diffraction was employed to analyze the crystal structure.
  • Analysis of bond lengths and angles to confirm hydrogen bonding.

Main Results:

  • The crystal structure of C(6)H(6)NO(2) (+)·HSO(4) (-) was successfully elucidated.
  • Intermolecular N-H⋯O and O-H⋯O hydrogen bonds were identified as the primary stabilizing forces.
  • The compound exists as a salt comprising a cation and a hydrogen sulfate anion.

Conclusions:

  • The crystal structure is stabilized by a network of intermolecular hydrogen bonds.
  • This structural information provides insights into the solid-state behavior of the compound.