Poly[diaqua-tris(μ(4)-isophthalato)dilanthanum(III)]

Area of Science:

• Inorganic Chemistry
• Materials Science
• Crystallography

Background:

• Coordination polymers offer tunable structures and properties.
• Lanthanum (La(III)) complexes are explored for diverse applications.
• Isophthalate ligands are versatile linkers in metal-organic frameworks.

Purpose of the Study:

• To synthesize and characterize a novel lanthanum-based coordination polymer.
• To elucidate the crystal structure and coordination environment of La(III) ions.
• To investigate the self-assembly of 2D layers into a 3D network.

Main Methods:

• Single-crystal X-ray diffraction for structural determination.
• Infrared spectroscopy for ligand coordination analysis.
• Powder X-ray diffraction for phase purity confirmation.

Main Results:

• The coordination polymer [La(2)(C(8)H(4)O(4))(3)(H(2)O)(2)](n) was successfully synthesized.
• Two distinct La(III) centers exhibit distorted penta-gonal-bipyramidal and bicapped trigonal-prismatic coordination.
• μ(4)-isophthalate ligands bridge La(III) ions into 2D layers, further connected by O-H⋯O hydrogen bonds into a 3D network.

Conclusions:

• The study presents a new lanthanum coordination polymer with intricate structural features.
• The combination of metal-ligand coordination and hydrogen bonding dictates the final 3D architecture.
• This work contributes to the understanding of lanthanum coordination chemistry and framework construction.