4,4'-Bipyridine acetic acid disolvate

Area of Science:

• Crystallography
• Supramolecular Chemistry
• Chemical Physics

Background:

• Hydrogen bonding plays a crucial role in crystal engineering and material properties.
• 4,4 -bipyridine is a versatile organic ligand used in coordination polymers and metal-organic frameworks.
• Acetic acid is a common organic acid with potential for forming hydrogen-bonded networks.

Purpose of the Study:

• To determine the crystal structure of the compound formed by 4,4 -bipyridine and acetic acid.
• To investigate the hydrogen bonding interactions that stabilize the crystal lattice.
• To analyze the supramolecular architecture and molecular conformation.

Main Methods:

• Single-crystal X-ray diffraction was employed to elucidate the crystal structure.
• Analysis of intermolecular interactions, including O-H⋯N and C-H⋯O hydrogen bonds.
• Geometric analysis of molecular arrangements and dihedral angles.

Main Results:

• The crystal structure consists of 4,4 -bipyridine and acetic acid molecules linked by strong O-H⋯N hydrogen bonds.
• Weak C-H⋯O hydrogen bonds further connect these units, forming a 2D supramolecular network parallel to the (001) plane.
• A dihedral angle of 31.8(1)° was observed between the two pyridine rings of the 4,4 -bipyridine molecule.

Conclusions:

• The compound exhibits a well-defined 2D supramolecular network driven by specific hydrogen bonding patterns.
• The crystal structure provides insights into the self-assembly behavior of 4,4 -bipyridine and acetic acid.
• Understanding these interactions is fundamental for designing novel crystalline materials with tailored properties.