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Zn/Mn-MOFs with `S-shaped' packing modes.

Hong-Jie Fan1, Qian-Qian Xu1, Tie-Zhen Ren1

  • 1School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, People's Republic of China.

Acta Crystallographica. Section C, Structural Chemistry
|May 13, 2014
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Summary

Two novel metal-organic frameworks (MOFs) were synthesized using benzene-1,3,5-tricarboxylate and 1,10-phenanthroline ligands. These MOFs, Zn-MOF and Mn-MOF, exhibit distinct 2D and 3D network structures with unique topological properties.

Keywords:
MOFsbinuclear Zn2 clustercrystal structurenet-based approachporous metal–organic frameworkstetranuclear Mn4 cluster

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Area of Science:

  • Materials Science
  • Coordination Chemistry
  • Crystallography

Background:

  • Metal-organic frameworks (MOFs) are advanced porous materials with tunable structures and properties.
  • MOFs are synthesized by linking metal ions or clusters with organic ligands.
  • Benzene-1,3,5-tricarboxylate (BTC) and 1,10-phenanthroline (phen) are common building blocks in MOF synthesis.

Purpose of the Study:

  • To synthesize and characterize novel MOFs with specific network topologies.
  • To investigate the structural diversity achievable with BTC and phen ligands.
  • To explore the coordination behavior of zinc and manganese ions with these ligands.

Main Methods:

  • Hydrothermal synthesis was employed to combine metal ions (Zn(II) and Mn(II)) with BTC and phen ligands.
  • Single-crystal X-ray diffraction was used to determine the crystal structures of the synthesized MOFs.
  • Topological analysis was performed to classify the network structures.

Main Results:

  • Two novel MOFs, Zn-MOF and Mn-MOF, were successfully synthesized.
  • Zn-MOF forms a 2D network with a 6(3) net topology, featuring binuclear Zn2 clusters and interdigitating phen ligands.
  • Mn-MOF forms a 3D network with a rutile net topology, incorporating Mn4 clusters and exhibiting an 'S-shaped' packing of phen ligands.

Conclusions:

  • The study demonstrates the successful synthesis of two novel MOFs with distinct dimensionalities and network topologies.
  • The choice of metal ion and ligand combination allows for control over the resulting framework structure.
  • The findings contribute to the understanding of MOF structural diversity and synthesis strategies.