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Updated: May 17, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)

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Published on: November 22, 2016

2,6-Dimethyl-pyridinium bromide.

Salim F Haddad¹, Basem F Ali, Rawhi Al-Far

¹Department of Chemistry, The University of Jordan, Amman 11942, Jordan.

Acta Crystallographica. Section E, Structure Reports Online

|November 6, 2012

Summary

This study details the crystal structure of 2,6-dimethyl-pyridinium bromide, revealing how hydrogen bonding and π-π interactions create intricate 3D networks. The findings offer insights into supramolecular assembly in ionic salts.

Area of Science:

Crystallography
Supramolecular Chemistry
Materials Science

Background:

Understanding the crystal structure of organic salts is crucial for predicting their physical and chemical properties.
2,6-dimethyl-pyridinium bromide is an ionic compound with potential applications in materials science.

Purpose of the Study:

To elucidate the crystal structure and intermolecular interactions of 2,6-dimethyl-pyridinium bromide.
To characterize the hydrogen bonding and π-π interactions governing the crystal packing.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the crystal structure.
Analysis of hydrogen bonding (N-H⋯Br, C-H⋯Br) and aryl π-π interactions was performed.

Main Results:

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The asymmetric unit contains two 2,6-dimethyl-pyridinium cations and two bromide anions.
Hydrogen bonding generates infinite chains and sheets, which alternate in the crystal packing.
Aryl π-π interactions connect these motifs into a 3D network.

Conclusions:

The crystal structure of 2,6-dimethyl-pyridinium bromide is characterized by a complex 3D network formed by hydrogen bonding and π-π interactions.
The study provides a detailed understanding of supramolecular assembly in this ionic salt.
These findings contribute to the broader knowledge of crystal engineering and the design of functional materials.