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Updated: May 22, 2026
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Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
Published on: May 28, 2014
Dibromido(di-2-pyridyl-amine-κ(2)N(2),N(2'))platinum(II)
1School of Applied Chemical Engineering, Research Institute of Catalysis, Chonnam National University, Gwangju 500-757, Republic of Korea.
Summary
This study details a platinum(II) complex with a di-2-pyridyl-amine ligand. The complex exhibits unique molecular stacking and hydrogen bonding, influencing its crystal structure.
Area of Science:
- Coordination Chemistry
- Crystal Engineering
- Supramolecular Chemistry
Background:
- Platinum(II) complexes are vital in catalysis and medicine.
- Di-2-pyridyl-amine (dpa) is a versatile chelating ligand.
- Understanding crystal packing is key to material properties.
Purpose of the Study:
- To synthesize and characterize a novel platinum(II) complex with a dpa ligand.
- To investigate the structural features and intermolecular interactions in the solid state.
- To explore the role of π-π interactions and hydrogen bonding in crystal packing.
Main Methods:
- Single-crystal X-ray diffraction was used to determine the molecular and crystal structure.
- Analysis of bond lengths, angles, and dihedral angles.
- Identification and analysis of intermolecular interactions, including hydrogen bonds and π-π stacking.
Main Results:
- The platinum(II) ion adopts a square-planar geometry coordinated by two bromide anions and the dpa ligand.
- The dpa ligand exhibits a non-planar conformation with a dihedral angle of 40.8° between pyridine rings.
- Molecules form columns via π-π interactions and are linked into chains by intermolecular N-H⋯Br hydrogen bonds.
Conclusions:
- The crystal structure is stabilized by a combination of π-π stacking and N-H⋯Br hydrogen bonding.
- The non-planar nature of the dpa ligand influences the overall molecular packing.
- This structural characterization provides insights into the design of novel platinum-based materials.
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