Poly[[mu-aqua-bis(mu-2,4-dichlorophenoxyacetato)barium(II)] monohydrate]

Area of Science:

• Coordination Chemistry
• Materials Science
• Crystallography

Background:

• Coordination polymers are crystalline materials constructed from metal ions and organic ligands.
• Barium-based coordination polymers are of interest due to their diverse structural possibilities and potential applications.

Purpose of the Study:

• To synthesize and characterize a novel coordination polymer involving barium and 2,4-dichlorophenoxyacetate.
• To elucidate the crystal structure and coordination environment of the barium ions.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structure.
• Analysis of coordination numbers and bonding interactions was performed.

Main Results:

• A novel 2D coordination polymer, {[Ba(C8H5Cl2O3)2(H2O)].H2O}n, was successfully synthesized.
• Each barium(II) ion exhibits nine-coordination, forming a distorted tricapped trigonal prism geometry.
• The structure features barium ions bridged by water molecules and 2,4-dichlorophenoxyacetate ligands, creating a layered framework.

Conclusions:

• The study successfully characterized a new barium coordination polymer with a 2D layered structure.
• The coordination environment and bridging modes of the ligands and water molecules dictate the overall framework architecture.
• Hydrogen bonding interactions play a crucial role in stabilizing the two-dimensional layers.