Poly[tetra-μ2-L-lactato-indium(III)sodium(I)]

Area of Science:

• Inorganic Chemistry
• Crystallography
• Materials Science

Background:

• Metal-organic frameworks (MOFs) are crucial in various applications.
• Understanding the coordination chemistry of indium and sodium is essential for designing new materials.

Purpose of the Study:

• To elucidate the crystal structure of a novel indium-sodium L-lactate compound.
• To characterize the coordination environments of In(III) and Na(I) ions.
• To describe the resulting two-dimensional layered structure and intermolecular interactions.

Main Methods:

• Single-crystal X-ray diffraction analysis was employed to determine the crystal structure.
• Coordination geometry and bonding were analyzed.
• Hydrogen bonding networks were identified.

Main Results:

• The asymmetric unit contains one In(III) ion, one Na(I) ion, and four L-lactate ligands.
• In(III) exhibits a distorted pentagonal-bipyramidal coordination (5 carboxylate O, 2 hydroxy O).
• Na(I) displays a distorted octahedral geometry (4 carboxylate O, 2 hydroxy O).
• A 2D layered structure is formed via In(L-lactate)4 units linked by Na(I) ions.
• Interlayer hydrogen bonds connect neighboring layers.

Conclusions:

• A novel 2D layered coordination polymer of indium and sodium L-lactate has been synthesized and characterized.
• The distinct coordination geometries of In(III) and Na(I) ions dictate the overall structure.
• Hydrogen bonding plays a significant role in stabilizing the layered architecture.