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Updated: May 22, 2026
04:51
Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Dichloridobis[2-(1-hydrazinylideneeth-yl)pyrazine-κN(1)]zinc
Li-Li Liang1, Meng Li, Jia-Cheng Liu
1College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China.
Summary
This study details the crystal structure of a novel zinc complex, [ZnCl2(C6H8N4)2]. The zinc ion exhibits distorted octahedral geometry, with ligands forming two five-membered rings and creating a 3D framework via intermolecular interactions.
Area of Science:
- Coordination Chemistry
- Crystal Engineering
- Materials Science
Background:
- Zinc(II) complexes are widely studied for their diverse applications.
- Understanding the coordination environment of metal ions is crucial for designing new materials.
- Pyrazine-based ligands offer versatile coordination modes.
Purpose of the Study:
- To synthesize and characterize a new zinc(II) complex with a pyrazine-derived ligand.
- To elucidate the crystal structure and coordination geometry of the complex.
- To investigate the intermolecular interactions driving the 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 provided geometric insights.
- Intermolecular interactions, such as hydrogen bonding, were identified and analyzed.
Main Results:
- The complex [ZnCl2(C6H8N4)2] features a central Zn(II) atom with distorted octahedral geometry.
- Two chloride ions and four nitrogen atoms from two 2-(1-hydrazinylideneeth-yl)pyrazine ligands coordinate the zinc ion.
- Two five-membered Zn-N-C-C-N metallacycles are formed, with a dihedral angle of 88.13(4)° between their planes.
- The organic ligands are nearly planar.
- Intermolecular N-H⋯N and N-H⋯Cl hydrogen bonds link the molecules into a 3D framework.
Conclusions:
- The study successfully determined the detailed crystal structure of the novel zinc(II) complex.
- The coordination geometry and ligand arrangement provide insights into zinc complex formation.
- The identified intermolecular interactions highlight the role of hydrogen bonding in constructing extended crystal structures.
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