catena-Poly[[diaqua-zinc(II)]-μ-piper-azine-1,4-diacetato-κN,O:N,O]

Area of Science:

• Coordination Chemistry
• Crystal Engineering
• Materials Science

Background:

• Piperazine-1,4-diacetate is a versatile ligand in coordination chemistry.
• Metal-organic frameworks and coordination polymers exhibit diverse applications.
• Understanding supramolecular assembly is crucial for designing new materials.

Purpose of the Study:

• To synthesize and characterize a novel zinc coordination polymer using piperazine-1,4-diacetate.
• To elucidate the crystal structure and supramolecular architecture of the title compound.
• To investigate the coordination behavior of the piperazine-1,4-diacetate ligand with Zn(II).

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structure.
• The asymmetric unit was analyzed, revealing the coordination environment of the Zn(II) ion.
• Intermolecular interactions, specifically hydrogen bonding, were identified to understand the supramolecular assembly.

Main Results:

• The title compound, [Zn(C(8)H(12)N(2)O(4))(H(2)O)(2)](n), was synthesized and structurally characterized.
• A distorted octahedral geometry around the Zn(II) ion was observed, coordinated by piperazine-1,4-diacetate ligands and water molecules.
• A three-dimensional supramolecular structure was formed through intermolecular O-H⋯O hydrogen bonds, linking polymeric chains.

Conclusions:

• The piperazine-1,4-diacetate ligand effectively coordinates with Zn(II) ions to form coordination polymers.
• The hydrogen bonding network plays a critical role in the formation of the extended three-dimensional supramolecular structure.
• The study provides insights into the crystal engineering of zinc-based coordination materials.