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A novel coordination polymer containing both interdigitated 1D chains and interpenetrated 2D grids.

Ponnaiyan Ayyappan1, Owen R Evans, Wenbin Lin

  • 1Department of Chemistry, CB#3290, University of North Carolina, Chapel Hill, North Carolina 27599, USA.

Inorganic Chemistry
|June 25, 2002
PubMed
Summary

Researchers synthesized a novel coordination polymer using zinc perchlorate and a pyridinecarboxylate ligand. This unique material features interdigitated 1D chains and interpenetrated 2D grids, showcasing complex structural properties.

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Area of Science:

  • Coordination Chemistry
  • Materials Science
  • Crystallography

Background:

  • Coordination polymers offer diverse structural motifs and potential applications.
  • Designing ligands with specific lengths and functionalities is crucial for controlling network topology.
  • Hydro(solvo)thermal synthesis is a common method for creating crystalline coordination materials.

Purpose of the Study:

  • To synthesize and characterize a novel coordination polymer with complex interpenetrating structures.
  • To investigate the self-assembly behavior of a new pyridinecarboxylate bridging ligand with zinc ions.
  • To determine the crystal structure and dimensionality of the resulting material.

Main Methods:

  • Hydro(solvo)thermal reaction between zinc perchlorate and the ethyl ester of a pyridinecarboxylate ligand.

Related Experiment Videos

  • Single-crystal X-ray diffraction analysis to determine the crystal structure.
  • Analysis of the coordination environment and bridging modes of the ligand and hydroxide groups.

    • Main Results:

    • A unique coordination polymer, [Zn(2.5)(L)(4)(mu(3)-OH)] x (H(2)O)(5), was successfully synthesized.
    • The structure contains both interdigitated infinite 1D chains and interpenetrated 2D rhombohedral grids.
    • The 1D chains exhibit mu(3)-bridged hydroxy groups with a [Zn(4)(mu(3)-OH)(2)(L)(6)] stoichiometry.
    • The 2D grids possess a Zn(L)(2) formula and large diagonal distances (31.7 and 25.2 A).
    • Crystal data confirmed a monoclinic space group P2/c.

    Conclusions:

    • The study reports a novel coordination polymer with a complex interwoven architecture.
    • The pyridinecarboxylate ligand facilitates the formation of both 1D chains and 2D grids.
    • The findings contribute to the understanding of structure-property relationships in coordination polymers.