Poly[μ5-(4-meth-oxy-benzene-sulfonato)-sodium]

Area of Science:

• Inorganic chemistry
• Crystallography
• Materials science

Background:

• Coordination chemistry of alkali metals.
• Polymerization of organic anions.
• Supramolecular assembly via hydrogen bonding.

Purpose of the Study:

• To characterize the crystal structure of the sodium 4-methoxybenzenesulfonate complex.
• To investigate the coordination environment of the sodium ion.
• To elucidate the self-assembly mechanism of the anionic ligands.

Main Methods:

• Single-crystal X-ray diffraction analysis.
• Analysis of coordination geometry.
• Identification of intermolecular interactions (hydrogen bonds).

Main Results:

• The sodium ion (Na(I)) exhibits a distorted pentagonal-bipyramidal coordination with seven oxygen atoms.
• 4-methoxybenzenesulfonate anions act as bis-chelating and bridging ligands.
• A two-dimensional polymer structure is formed, extended into a three-dimensional network by weak C-H⋯O hydrogen bonds.

Conclusions:

• The study reveals a novel 3D coordination polymer based on sodium and 4-methoxybenzenesulfonate.
• The coordination mode of the anion and the resulting network topology are determined.
• Weak hydrogen bonding plays a crucial role in stabilizing the overall three-dimensional structure.