Poly[di-aqua-[μ₂-1,4-bis-(pyridin-3-ylmeth-yl)piperazine][μ₂-4-(2-carboxyl-atoeth-yl)benzoato]cobalt(II)]

Area of Science:

• Materials Science
• Coordination Chemistry
• Crystallography

Background:

• Coordination polymers offer tunable structures and properties.
• Layered materials are of interest for various applications.
• Cobalt complexes exhibit diverse coordination behaviors.

Purpose of the Study:

• To synthesize and characterize a novel layered cobalt coordination polymer.
• To elucidate the structural features and assembly of the material.
• To investigate the role of ligands and hydrogen bonding in the structure.

Main Methods:

• Single-crystal X-ray diffraction for structural determination.
• Synthesis of cobalt coordination polymer using specific ligands.
• Analysis of ligand coordination and hydrogen bonding interactions.

Main Results:

• A layered cobalt coordination polymer, [Co(ceb)(3-bpmp)(H2O)2], was successfully synthesized.
• The structure consists of chain-like [Co(ceb)(H2O)2] units linked by 3-bpmp ligands into (4,4)-grid layers.
• Layers stack in an AAA pattern, stabilized by O-H⋯N hydrogen bonds between aqua ligands and piperazine nitrogen atoms.

Conclusions:

• The study presents a new layered cobalt coordination polymer with a unique (4,4)-grid motif.
• Hydrogen bonding plays a crucial role in the interlayer stacking and overall structural stability.
• The findings contribute to the understanding of coordination polymer assembly and design.