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Updated: Jun 1, 2026
04:14
Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
Published on: October 1, 2019
Poly[μ-aqua-di-μ-benzoato-lead(II)].
1Department of Physical Chemistry, Henan Polytechnic University, Jiaozuo 454003, People's Republic of China.
Summary
Researchers synthesized a novel lead(II) coordination polymer using lead(II) nitrate and benzoic acid. This study details its 3D supramolecular structure, highlighting metal-ligand bonding and hydrogen-bonding interactions.
Area of Science:
- Inorganic Chemistry
- Crystallography
- Materials Science
Background:
- Coordination polymers are crystalline materials with diverse applications.
- Lead(II) compounds exhibit varied coordination geometries and structural motifs.
- Benzoate ligands are common in metal-organic frameworks and coordination polymers.
Purpose of the Study:
- To synthesize and characterize a novel coordination polymer of lead(II) with benzoate ligands.
- To elucidate the crystal structure and supramolecular architecture of the resulting polymer.
- To investigate the role of water molecules and hydrogen bonding in stabilizing the structure.
Main Methods:
- Single-crystal X-ray diffraction was used to determine the molecular and crystal structure.
- The reaction involved lead(II) nitrate and benzoic acid in an aqueous solution.
- Structural analysis focused on coordination geometry, metal-metal distances, and intermolecular interactions.
Main Results:
- The reaction yielded the coordination polymer [Pb(C(7)H(5)O(2))(2)(H(2)O)](n).
- The asymmetric unit contains one Pb(II) ion, two benzoate ligands, and one water molecule.
- Pb(II) exhibits a distorted pentagonal-bipyramidal geometry, bridged by water and benzoate ligands, forming a 3D supramolecular structure.
- Pb-O bond distances range from 2.494(4) to 2.735(4) Å, with an insignificant Pb⋯Pb distance of 4.0683(4) Å.
- O-H⋯O hydrogen bonds involving water and carboxylate groups stabilize the structure.
Conclusions:
- A novel 3D coordination polymer of lead(II) with benzoate ligands was successfully synthesized and characterized.
- The crystal structure reveals a distorted pentagonal-bipyramidal coordination environment around Pb(II).
- The supramolecular architecture is stabilized by bridging ligands and significant O-H⋯O hydrogen bonding, indicating the importance of these interactions in crystal engineering.
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