Poly[[aqua-(μ(5)-3,4,5,6-tetra-carb-oxy-cyclo-hexane-1,2-dicarboxyl-ato)strontium] monohydrate]

Area of Science:

• Coordination Chemistry
• Crystal Engineering
• Materials Science

Background:

• Strontium compounds exhibit diverse coordination geometries and structural motifs.
• Metal-organic frameworks (MOFs) and coordination polymers are of interest for various applications.
• Ligand design plays a crucial role in dictating the final structure and properties of coordination compounds.

Purpose of the Study:

• To synthesize and characterize a novel strontium coordination compound.
• To elucidate the coordination environment of the Sr(II) ion.
• To investigate the supramolecular assembly and hydrogen bonding interactions within the crystal structure.

Main Methods:

• Single-crystal X-ray diffraction analysis was employed to determine the crystal structure.
• The coordination geometry around the strontium ion was analyzed.
• Hydrogen bonding networks were identified and characterized.

Main Results:

• The strontium ion (Sr(II)) is coordinated by six oxygen atoms from five symmetry-related ligands and one water molecule.
• A slightly distorted monocapped trigonal-prismatic coordination environment was observed for Sr(II).
• The ligands bridge Sr(II) ions to form a two-dimensional layered structure, which is further extended into a three-dimensional network via O-H⋯O hydrogen bonds.

Conclusions:

• The synthesized compound exhibits a robust 2D coordination network stabilized by bridging tetra-carboxy-cyclohexane-1,2-dicarboxylate ligands.
• Hydrogen bonding plays a significant role in the formation of the extended three-dimensional supramolecular architecture.
• The study provides insights into the structural diversity of strontium coordination compounds and the role of polycarboxylate ligands in crystal engineering.