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Related Concept Videos

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview01:26

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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 water loss...
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Alkylation is one of the methods used to prepare amines. Direct alkylation of ammonia or a primary amine with an alkyl halide gives polyalkylated amines along with a quaternary ammonium salt through successive SN2 reactions. This process of making the quaternary salt through the direct alkylation method is called exhaustive alkylation.
Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...
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Primary, secondary, and tertiary amines are compounds consisting of one, two, and three alkyl groups connected to the amino group (–NH2), respectively. As depicted in Figure 1, the common name of the primary amines is obtained by adding the suffix -amine to the alkyl substituent attached to the amino group as the corresponding alkylamine.
Nomenclature of Secondary and Tertiary Amines01:12

Nomenclature of Secondary and Tertiary Amines

The secondary and tertiary amines are derivatives of ammonia, where two and three of its hydrogens are replaced by alkyl groups, respectively. Secondary and tertiary amines can be symmetrical with identical alkyl groups attached to the nitrogen atom or unsymmetrical when more than one type of alkyl group is present. The standard nomenclature of secondary and tertiary amines is similar to the names given to the primary amines. They are generally named alkylamines. As depicted in Figure 1, for...
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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
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Ammonium 1-hydr-oxy-2-naphthoate.

Ye Bi1, Cheng-Li Han

  • 1College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online
|January 5, 2011
PubMed
Summary

This study investigates the crystal structure of ammonium 1-hydr-oxy-2-naphthoate. The compound was synthesized by evaporating an ammonia solution of 1-hydr-oxy-2-naphthoic acid. The crystal structure is stabilized by hydrogen bonds between molecules. These bonds form layers that run parallel to a specific plane in the crystal. The study confirms that hydrogen bonding is the main force holding the structure together. The findings provide insight into how this compound's molecules arrange themselves in a solid state. The research may help scientists understand similar compounds and their structural properties.

Keywords:
Ammonium salt structureHydrogen bonding in crystalsOrganic crystallographyNaphthoic acid derivatives

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Area of Science:

  • Crystallography
  • Organic chemistry
  • Materials science

Background:

The study of crystal structures is essential for understanding molecular interactions and stability in chemical compounds. Prior research has shown that hydrogen bonding plays a significant role in stabilizing crystal lattices. However, the specific arrangement of hydrogen bonds in ammonium 1-hydr-oxy-2-naphthoate remains unclear. Existing knowledge focuses on general hydrogen-bonding patterns in organic crystals. This paper addresses a gap in the literature regarding the structural details of this specific compound. No prior work had resolved the exact hydrogen-bonding configuration in ammonium 1-hydr-oxy-2-naphthoate. This uncertainty motivated the current investigation into its crystal structure. The study aims to clarify how the compound's molecular arrangement contributes to its stability. Understanding these interactions may inform future studies on similar organic salts.

Purpose Of The Study:

The researchers aimed to determine the crystal structure of ammonium 1-hydr-oxy-2-naphthoate and analyze its hydrogen-bonding network. The compound was synthesized via slow evaporation of an ammonia solution of 1-hydr-oxy-2-naphthoic acid. The study focuses on the structural implications of hydrogen bonding in this salt. The goal is to describe the intermolecular interactions that stabilize the crystal lattice. The research seeks to provide a detailed account of the compound's molecular arrangement. The authors investigate how hydrogen bonds influence the overall crystal structure. The study addresses a specific question about the spatial orientation of hydrogen bonds. The findings may contribute to broader understanding of hydrogen-bonded organic salts.

Main Methods:

The compound was synthesized through slow evaporation of a 30% ammonia solution of 1-hydr-oxy-2-naphthoic acid. Crystallographic analysis was conducted to determine the molecular arrangement. The structure was solved using X-ray diffraction techniques. The study focused on identifying hydrogen-bonding interactions within the crystal lattice. The researchers examined the spatial distribution of atoms in the crystal structure. The analysis included determining bond lengths and angles between atoms. The study utilized standard crystallographic software for data processing. The results were interpreted to describe the hydrogen-bonding network in detail.

Main Results:

The crystal structure of ammonium 1-hydr-oxy-2-naphthoate is stabilized by intermolecular N-H⋯O hydrogen bonds. These bonds form layers parallel to the bc plane of the crystal lattice. The hydrogen-bonding network contributes to the overall stability of the structure. The study identified specific distances and angles in the hydrogen-bonding interactions. The layers are arranged in a consistent pattern across the crystal lattice. The analysis revealed no additional significant interactions beyond hydrogen bonding. The structure shows a regular and repeating pattern of hydrogen-bonded units. The findings confirm the role of hydrogen bonding in stabilizing the crystal structure.

Conclusions:

The authors conclude that hydrogen bonding is the primary stabilizing force in ammonium 1-hydr-oxy-2-naphthoate. The crystal structure forms layers through intermolecular N-H⋯O hydrogen bonds. These layers are aligned parallel to the bc plane of the crystal lattice. The study confirms the presence of a well-defined hydrogen-bonding network. The findings align with the observed structural properties of the compound. The authors suggest that the hydrogen-bonding pattern is consistent with known crystallographic principles. The study provides a detailed account of the molecular arrangement in the crystal. The results may inform future research on similar hydrogen-bonded organic salts.

The crystal structure is stabilized by intermolecular N-H⋯O hydrogen bonds forming layers parallel to the bc plane.

The compound was obtained by slow evaporation of a 30% ammonia solution of 1-hydr-oxy-2-naphthoic acid.

The bc plane is where hydrogen-bonded layers are aligned, contributing to the overall stability of the crystal lattice.

Hydrogen bonding is the primary stabilizing force, forming layers that define the crystal structure.

The network contributes to the structural stability and defines the spatial arrangement of molecules in the crystal lattice.

The authors concluded that hydrogen bonding is the main stabilizing force and forms layers aligned with the bc plane.