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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-(4-Nitro-benzene-sulfonamido)pyridinium nitrate
This study reveals a short carbon-nitrogen bond in a pyridinium compound, suggesting π-electron conjugation. Crystal structure analysis indicates stabilization through N-H⋯O hydrogen bonds.
Area of Science:
- Crystallography
- Organic Chemistry
- Supramolecular Chemistry
Background:
- Sulfonamide derivatives are important in medicinal chemistry.
- Pyridinium compounds exhibit diverse electronic properties.
Purpose of the Study:
- To investigate the structural and electronic properties of a novel pyridinium sulfonamide compound.
- To analyze the intermolecular interactions within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the crystal structure.
- Analysis of bond lengths and angles provided insights into electronic conjugation.
Main Results:
- A short C-N bond distance of 1.394(2) Å was observed, indicative of π-electron conjugation.
- The crystal structure is stabilized by a network of N-H⋯O hydrogen bonds.
Conclusions:
- The short C-N bond suggests significant electronic interaction between the sulfonamide and pyridinium moieties.
- Hydrogen bonding plays a crucial role in the overall crystal packing and stability.
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