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Updated: Jun 5, 2026

Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Poly[diaqua-di-μ(4)-citrato-trizinc(II)]
1College of Chemistry and Ecological Engineering, Guangxi University for Nationalities, Nanning 530006, Guangxi, People's Republic of China.
This study describes a novel 2D coordination polymer featuring zinc ions and citrate ligands. The structure exhibits an unusual coordination mode for citrate, forming a square-grid motif with hydrogen bonds.
Area of Science:
- Materials Science
- Crystallography
- Coordination Chemistry
Background:
- Coordination polymers offer diverse structural possibilities.
- Citrate ligands can adopt various coordination modes.
Purpose of the Study:
- To synthesize and characterize a novel zinc-citrate coordination polymer.
- To investigate the coordination behavior of citrate in a polymeric structure.
Main Methods:
- Single-crystal X-ray diffraction.
- Analysis of coordination modes and hydrogen bonding.
Main Results:
- A 2D coordination polymer [Zn(3)(C(6)H(5)O(7))(2)(H(2)O)(2)](n) was synthesized.
- The structure contains three zinc atoms and two hepta-dentate citrate ligands per repeating unit.
- Citrate exhibits an unusual coordination mode, leading to a square-grid motif and intermolecular hydrogen bonds.
Conclusions:
- The study reveals a novel 2D zinc-citrate coordination polymer with unique structural features.
- The findings contribute to understanding the coordination chemistry of citrate in metal-organic materials.
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