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Updated: Jun 1, 2026
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Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
2-(Chloro-meth-yl)benzimidazolium chloride
1Ordered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China.
Summary
The crystal structure of a C(8)H(8)ClN(2) (+)·Cl(-) compound reveals a 1D network stabilized by hydrogen bonds and pi-pi stacking interactions.
Area of Science:
- Crystallography
- Solid-state chemistry
- Supramolecular chemistry
Background:
- Understanding intermolecular forces is crucial for predicting and controlling material properties.
- Crystal engineering aims to design materials with desired structures and functions through the rational assembly of molecules.
- Hydrogen bonding and pi-pi stacking are key non-covalent interactions that influence crystal packing and stability.
Purpose of the Study:
- To elucidate the crystal structure of the title compound, C(8)H(8)ClN(2) (+)·Cl(-).
- To investigate the role of intermolecular interactions in stabilizing the observed crystal network.
- To provide insights into the structure-property relationships of related organic salts.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the three-dimensional atomic arrangement.
- Analysis of hydrogen bonding (N-H⋯Cl) and pi-pi stacking interactions was performed.
- Intermolecular distances and coordination geometries were evaluated to understand structural stabilization.
Main Results:
- The crystal structure consists of discrete cations (C(8)H(8)ClN(2) (+)) and anions (Cl(-)).
- These ions are interconnected via N-H⋯Cl hydrogen bonds, forming a neutral one-dimensional network along the [001] direction.
- Complementary pi-pi stacking interactions with centroid-centroid distances of 3.768(2) and 3.551(2) Å were identified, further stabilizing the structure.
Conclusions:
- The crystal structure is stabilized by a combination of N-H⋯Cl hydrogen bonds and pi-pi stacking interactions.
- These interactions cooperatively form a robust one-dimensional supramolecular network.
- The findings contribute to the understanding of crystal packing and stabilization mechanisms in organic salt systems.
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