catena-Poly[[tri-aqua-magnesium]-μ2-malonato].

Area of Science:

• Inorganic Chemistry
• Crystallography
• Materials Science

Background:

• Understanding the coordination chemistry of magnesium is crucial for various applications.
• Malonate ligands are versatile building blocks in coordination polymers.
• Metal-organic frameworks (MOFs) and coordination polymers exhibit diverse structural motifs.

Purpose of the Study:

• To elucidate the crystal structure of the novel magnesium-malonate coordination polymer, [Mg(C3H2O4)(H2O)3]n.
• To investigate the coordination environment of the magnesium ion.
• To analyze the supramolecular assembly driven by hydrogen bonding.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
• Infrared spectroscopy was used to confirm the presence of functional groups.
• Powder X-ray diffraction was utilized for phase purity analysis.

Main Results:

• The title compound, [Mg(C3H2O4)(H2O)3]n, crystallizes with magnesium ions in an octahedral coordination environment.
• Malonate anions act as linkers, connecting the octa-hedra into 1D chains along the c-axis.
• O-H⋯O hydrogen bonds between coordinated water molecules and malonate oxygens further stabilize the structure, forming a 3D network.

Conclusions:

• The study successfully characterized a novel 3D coordination network of magnesium and malonate.
• The structural analysis reveals the interplay between coordination bonds and hydrogen bonds in directing the supramolecular architecture.
• This magnesium-malonate compound serves as a model system for understanding the formation of extended structures in coordination chemistry.