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Related Concept Videos

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Regioselectivity of Electrophilic Additions-Peroxide Effect

In the presence of organic peroxides, the addition of hydrogen bromide to an alkene yields the isomer that is not predicted by Markovnikov’s rule. For example, the addition of hydrogen bromide to 2-methylpropene in the presence of peroxides gives 1-bromo-2-methylpropane. This addition reaction proceeds via a free radical mechanism, which reverses the regioselectivity. The free radical reaction mechanism involves three stages: initiation, propagation, and termination.
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Formation of Halohydrin from Alkenes

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Basicity of Heterocyclic Aromatic Amines01:25

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Radical Substitution: Allylic Bromination01:27

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In organic synthesis, the formation of products can be altered by changing the reaction conditions. For example, a dibromo addition product is formed when propene is treated with bromine at room temperature. In contrast, propene undergoes allylic substitution in non-polar solvents at high temperatures to give 3-bromopropene. In order to avoid the addition reaction, the bromine concentration must be kept as low as possible throughout the reaction. This can be achieved using N-bromosuccinimide...
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Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions
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2-Methyl-piperidinium bromide.

Qian Xu1

  • 1Ordered Matter Science Research Center, Southeast University, Nanjing 211189, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online
|June 22, 2012
PubMed
Summary
This summary is machine-generated.

This study details the crystal structure of an organic-inorganic hybrid salt, revealing N-H⋯Br hydrogen bonds. These bonds create continuous hydrogen-bonded chains along the c axis in the solid state.

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Area of Science:

  • Crystal engineering
  • Solid-state chemistry
  • Supramolecular chemistry

Background:

  • Organic-inorganic hybrid salts are versatile materials with tunable properties.
  • Understanding intermolecular interactions is crucial for designing novel materials.
  • Hydrogen bonding plays a significant role in the self-assembly of crystalline structures.

Purpose of the Study:

  • To elucidate the crystal structure of the organic-inorganic hybrid salt C(6)H(14)N(+)·Br(-).
  • To investigate the role of hydrogen bonding in the assembly of this hybrid salt.
  • To characterize the formation of extended structural motifs.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
  • Analysis of intermolecular interactions, specifically N-H⋯Br hydrogen bonds, was performed.
  • The crystallographic data was analyzed to identify extended structural features.

Main Results:

  • The crystal structure of C(6)H(14)N(+)·Br(-) was successfully determined.
  • Strong N-H⋯Br hydrogen bonds were identified as the primary driving force for self-assembly.
  • These hydrogen bonds link the organic cations and inorganic anions into extended chains along the c crystallographic axis.

Conclusions:

  • The organic-inorganic hybrid salt exhibits a well-defined crystal structure driven by hydrogen bonding.
  • The formation of 1D hydrogen-bonded chains highlights the predictable nature of supramolecular assembly in such systems.
  • This work provides fundamental insights into the structural characteristics of organic-inorganic hybrid salts.