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Updated: May 31, 2026
04:51
Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Poly[[octa-aqua-tetra-kis-(μ(3)-pyridine-2,5-dicarboxyl-ato)copper(II)diytterbium(III)] monohydrate]
Summary
This study details a novel heterometallic coordination polymer, {[CuYb(2)(C(7)H(3)NO(4))(4)(H(2)O)(8)]·H(2)O}(n), featuring copper and ytterbium ions bridged by pyridine-2,5-dicarboxylate ligands, forming a 3D structure with extensive hydrogen bonding and pi-pi stacking.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Crystallography
Background:
- Heterometallic coordination polymers offer tunable properties due to the combination of different metal ions.
- Pyridine-2,5-dicarboxylate (pda) is a versatile ligand capable of bridging metal centers and forming complex structures.
Purpose of the Study:
- To synthesize and characterize a novel heterometallic coordination polymer containing Cu(II) and Yb(III) ions.
- To elucidate the crystal structure and supramolecular interactions within the compound.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the crystal structure.
- Analysis of coordination environments and intermolecular interactions (hydrogen bonding, π-π stacking).
Main Results:
- The asymmetric unit contains Cu(II), Yb(III), pyridine-2,5-dicarboxylate (pda) anions, and coordinated water molecules.
- Cu(II) exhibits an elongated octahedral geometry, while Yb(III) shows a distorted square-antiprismatic geometry.
- The pda ligands bridge Cu and Yb ions, creating a 3D polymeric framework with extensive O-H⋯O hydrogen bonds and π-π stacking between pyridine rings.
Conclusions:
- A novel 3D heterometallic coordination polymer {[CuYb(2)(C(7)H(3)NO(4))(4)(H(2)O)(8)]·H(2)O}(n) has been successfully synthesized and structurally characterized.
- The crystal structure reveals intricate coordination environments and significant supramolecular interactions contributing to the overall framework stability.
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