First hydrotalcite-like sulfonate coordination network incorporating robust cationic layers and flexible interlayer...

Area of Science:

• Materials Science
• Inorganic Chemistry
• Crystallography

Background:

• Coordination networks offer tunable properties for various applications.
• Microporous materials are crucial for separation and storage technologies.

Purpose of the Study:

• To synthesize and characterize a novel coordination network of D,L-homocysteic acid with strontium chloride.
• To investigate the structural, thermal, and water interaction properties of the new compound.

Main Methods:

• Single-crystal X-ray diffraction for structural determination.
• Thermogravimetric analysis (TGA) for thermal stability.
• Variable-temperature Fourier transform infrared spectroscopy (FT-IR) for structural changes.
• Powder X-ray diffraction (XRD) for phase purity and structural integrity.

Main Results:

• A novel infinite microporous multilayered coordination network was successfully synthesized.
• The structure features one-dimensional coordination-based microtubes forming cationic layers, with chloride anions intercalated.
• The compound is thermally stable up to 326°C and exhibits reversible water loss/gain while maintaining its layered structure.
• Robust cationic layer framework with flexible interlayer interactions was identified.

Conclusions:

• The synthesized strontium chloride-D,L-homocysteic acid coordination network possesses a stable, microporous multilayered structure.
• The material demonstrates potential for anion exchange and gas storage applications due to its structural characteristics.
• Understanding the interplay between framework robustness and interlayer flexibility is key for designing functional materials.