Poly[[μ(10)-4,4'-(ethane-1,2-diyldi-oxy)dibenzoato]dipotassium]

Area of Science:

• Inorganic Chemistry
• Crystal Engineering
• Coordination Chemistry

Background:

• The synthesis and structural characterization of novel coordination compounds are crucial for understanding chemical bonding and material properties.
• Metal-organic frameworks and coordination polymers offer diverse structural motifs with potential applications in various fields.

Purpose of the Study:

• To synthesize and elucidate the crystal structure of a novel potassium salt with the formula [K(2)(C(16)H(12)O(6))](n).
• To investigate the coordination environment of the potassium cation and the packing of the organic anion in the solid state.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
• The salt was synthesized via the reaction of 1,2-bis-[4-(ethyl-carbox-yl)-phenox-yl]ethane with potassium hydroxide (KOH) in an aqueous solution.

Main Results:

• The crystal structure revealed a three-dimensional network structure.
• Potassium cations ([K+]) exhibit an irregular [KO(6)] coordination polyhedron, being coordinated by six oxygen atoms.
• The coordination of K+ cations leads to the formation of K/O layers parallel to the (100) crystallographic plane.
• These layers are interconnected by nearly coplanar organic anions, forming an extended three-dimensional network.

Conclusions:

• The study successfully synthesized and characterized a novel potassium salt with a unique 3D network architecture.
• The coordination behavior of the potassium cation and the structural role of the organic anion were elucidated.
• The findings contribute to the understanding of crystal engineering principles in the design of coordination polymers.