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Updated: Jun 1, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
4-(2-Nitro-benzene-sulfonamido)pyridinium nitrate
This study details the crystal structure of a pyridinium compound, revealing potential π-electron conjugation within its sulfonamide group. Hydrogen bonds stabilize the crystal lattice, offering insights into molecular interactions.
Area of Science:
- Crystallography
- Organic Chemistry
- Materials Science
Background:
- Understanding the structural and electronic properties of organic compounds is crucial for developing new materials.
- Sulfonamide and pyridinium moieties are common in pharmaceuticals and functional materials.
Purpose of the Study:
- To elucidate the crystal structure of the title compound, C(11)H(10)N(3)O(4)S(+)·NO(3) (-).
- To investigate potential electronic interactions, specifically π-electron conjugation, within the molecule.
- To identify intermolecular forces stabilizing the crystal.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of bond distances and angles provided insights into molecular geometry.
- Identification of hydrogen bonding networks confirmed crystal stabilization.
Main Results:
- The asymmetric unit contains two molecules of C(11)H(10)N(3)O(4)S(+)·NO(3) (-).
- Normal bond distances were observed, with specific C-N distances in the sulfonamide group suggesting possible π-electron conjugation with the pyridinium ring.
- N-H⋯O hydrogen bonds were identified as the primary stabilizing force in the crystal structure.
Conclusions:
- The crystal structure of the title compound has been determined.
- Evidence suggests potential π-electron conjugation between the sulfonamide group and the pyridinium ring.
- The crystal lattice is stabilized by a network of N-H⋯O hydrogen bonds.
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