Tetraaquabis[2-(4-pyridyl)ethanesulfonato-N]zinc(II)

Area of Science:

• Coordination Chemistry
• Crystallography
• Materials Science

Background:

• Zinc complexes are vital in catalysis and biological systems.
• Understanding coordination geometries informs material properties.
• Pyridine-based ligands offer versatile coordination possibilities.

Purpose of the Study:

• To synthesize and characterize a novel zinc complex.
• To elucidate the coordination environment around the central zinc atom.
• To investigate the crystal packing and intermolecular interactions.

Main Methods:

• Single-crystal X-ray diffraction was employed for structural determination.
• Infrared spectroscopy was used to identify functional groups.
• Elemental analysis confirmed the compound's composition.

Main Results:

• The title compound, [Zn(C(7)H(8)NO(3)S)(2)(H(2)O)(4)], crystallizes as a monomeric centrosymmetric complex.
• Octahedral coordination around the zinc atom involves two axial nitrogen atoms from pyridine ligands and four equatorial oxygen atoms from water molecules.
• Zn-N bond lengths are 2.102(3) Å, and Zn-O bond lengths range from 2.114(2) to 2.167(2) Å.
• Crystal packing is dominated by hydrogen bonds involving water molecules, while the sulfonate group remains uncoordinated.

Conclusions:

• The synthesized zinc complex exhibits a well-defined octahedral geometry.
• Hydrogen bonding plays a crucial role in the supramolecular assembly of the crystal structure.
• The uncoordinated sulfonate group suggests potential for further functionalization or alternative coordination modes in related compounds.