Tetra-aqua(2,2'-bipyridine-κN,N')magnesium(II) bis-(4-bromo-benzoate)

Area of Science:

• Coordination Chemistry
• Crystal Engineering
• Supramolecular Chemistry

Background:

• 2,2'-bipyridine is a common chelating ligand in coordination chemistry.
• Understanding supramolecular assembly is crucial for designing novel materials.
• Magnesium complexes exhibit diverse structural and functional properties.

Purpose of the Study:

• To characterize the crystal structure of a novel magnesium(II) complex.
• To investigate the intermolecular interactions governing crystal packing.
• To analyze the coordination geometry and ligand behavior.

Main Methods:

• Single-crystal X-ray diffraction analysis was employed.
• Structural data were analyzed to determine coordination environment and bonding.
• Intermolecular interactions such as hydrogen bonding and π-π stacking were identified.

Main Results:

• The magnesium(II) ion exhibits a distorted octahedral MgN(2)O(4) coordination geometry.
• 2,2'-bipyridine ligands are nearly coplanar, facilitating π-π stacking.
• A 3D supramolecular network is formed via O-H⋯O, C-H⋯O, C-H⋯Br hydrogen bonds, and π-π stacking.
• One bromine atom in the anion is disordered over two positions.

Conclusions:

• The study elucidates the intricate crystal structure and supramolecular architecture of the magnesium complex.
• The findings highlight the role of hydrogen bonding and π-π interactions in crystal engineering.
• The observed disorder provides insights into crystal packing dynamics.