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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
μ-4,4'-Bipyridine-κN:N'-bis-[bis-(2-chloro-benzoato-κO,O')lead(II)]
1College of Mathematics, Physics and Software Engineering, Lanzhou Jiaotong University, Lanzhou 730070, People's Republic of China.
Acta Crystallographica. Section E, Structure Reports Online
|August 13, 2011
Summary
This study details a novel dinuclear lead(II) complex featuring hemi-directed coordination. The crystal structure is stabilized by hydrogen bonds and π-π stacking interactions.
Area of Science:
- Coordination Chemistry
- Crystal Engineering
- Materials Science
Background:
- Lead(II) complexes are of interest due to their diverse coordination geometries and potential applications.
- Understanding the supramolecular assembly of metal-organic compounds is crucial for designing new materials.
- The use of carboxylate and bipyridine ligands offers versatile coordination modes.
Purpose of the Study:
- To synthesize and characterize a novel dinuclear lead(II) complex.
- To investigate the coordination environment and supramolecular structure of the complex.
- To explore the role of non-covalent interactions in stabilizing the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the crystal structure.
- Analysis of coordination geometry and bond distances.
- Identification and analysis of intermolecular interactions, including hydrogen bonds and π-π stacking.
Main Results:
- A dinuclear lead(II) complex, [Pb(2)(2-chloro-benzoate)(4)(4,4'-bipyridine)], was successfully synthesized and characterized.
- The lead(II) atoms exhibit five-coordinate, hemi-directed coordination geometry.
- The crystal structure is stabilized by weak intermolecular Pb⋯O contacts, C-H⋯O hydrogen bonds, and π-π stacking interactions between aromatic rings.
Conclusions:
- The study reveals a unique coordination mode in a dinuclear lead(II) complex.
- Supramolecular assembly is effectively driven by a combination of weak metal-ligand interactions and non-covalent forces.
- The findings contribute to the understanding of crystal engineering principles for lead-based coordination compounds.
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