Dipotassium maleate with boric acid

Area of Science:

• Inorganic Chemistry
• Crystal Engineering
• Materials Science

Background:

• Understanding the coordination chemistry of boric acid and its complexes is crucial for developing new materials.
• Maleate ligands offer versatile coordination modes in metal-organic frameworks.
• Potassium borate compounds have potential applications in various fields.

Purpose of the Study:

• To elucidate the crystal structure of poly[(mu3-boric acid)-mu4-maleato-dipotassium].
• To investigate the coordination environment of potassium cations within the compound.
• To analyze the role of hydrogen bonding in stabilizing the crystal packing.

Main Methods:

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

Main Results:

• The crystal structure of [K2(C(4)H(2)O(4)){B(OH)3}]n was successfully determined.
• Two distinct potassium cations exhibit diverse coordination numbers (seven and eight) with oxygen atoms from boric acid and maleate.
• A weak eta(1)-type coordination to the maleate C=C bond was observed for one potassium cation.
• Extensive hydrogen bonding between boric acid and maleate units dictates the overall packing.

Conclusions:

• The study provides a detailed structural characterization of a novel potassium borate-maleate coordination polymer.
• The findings highlight the complex coordination behavior of potassium ions and the interplay of different ligands.
• The hydrogen bonding network plays a vital role in the stability and assembly of the crystal structure.