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Diaqua-bis(picolinato N-oxide-κO,O')zinc(II)
Xiu-Bing Li1, Run-Ling Shang, Bai-Wang Sun
1Ordered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China.
Acta Crystallographica. Section E, Structure Reports Online
|January 5, 2011
Summary
This study details the crystal structure of a novel zinc compound featuring picolinic acid N-oxide ligands and aqua ligands. The compound forms a 2D network through intermolecular hydrogen bonding, revealing its coordination chemistry.
Area of Science:
- Coordination Chemistry
- Crystal Engineering
- Supramolecular Chemistry
Background:
- Picolinic acid N-oxide is a versatile ligand in coordination chemistry.
- Metal-organic frameworks and coordination polymers are of significant interest for their diverse applications.
- Understanding the self-assembly of metal complexes is crucial for designing novel materials.
Purpose of the Study:
- To synthesize and characterize a new zinc(II) coordination compound with picolinic acid N-oxide.
- To investigate the crystal structure and intermolecular interactions of the synthesized compound.
- To explore the potential for forming extended structures through hydrogen bonding.
Main Methods:
- Single-crystal X-ray diffraction was used to determine the molecular and crystal structure.
- The coordination environment around the zinc(II) ion was analyzed.
- Intermolecular interactions, specifically hydrogen bonding, were identified and characterized.
Main Results:
- The title compound, [Zn(C(6)H(4)NO(3))(2)(H(2)O)(2)], was successfully synthesized and characterized.
- The zinc(II) ion exhibits a distorted octahedral coordination geometry.
- Two aqua ligands occupy axial positions, while four oxygen atoms from two chelating picolinic acid N-oxide ligands occupy the equatorial plane.
- Intermolecular hydrogen bonds between aqua and organic ligands result in a two-dimensional layered structure.
Conclusions:
- The crystal structure reveals a discrete mononuclear zinc(II) complex with a distorted octahedral geometry.
- The formation of a 2D supramolecular network is driven by intermolecular hydrogen bonding.
- This study contributes to the understanding of coordination modes and self-assembly in zinc(II) complexes with N-oxide ligands.
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