4-Acetyl-pyridinium hydrogen sulfate

Area of Science:

• Crystallography
• Materials Science
• Chemical Physics

Background:

• Understanding the intermolecular interactions in crystalline solids is crucial for predicting material properties.
• Pyridinium salts and their derivatives are important in various chemical applications.
• Hydrogen sulfate anions play a significant role in hydrogen-bonding networks.

Purpose of the Study:

• To elucidate the crystal structure of the 4-acetyl-pyridinium hydrogen sulfate salt.
• To investigate the hydrogen bonding patterns within the crystal lattice.
• To characterize the interactions between the organic cation and inorganic anion.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structure.
• Analysis of bond lengths, bond angles, and intermolecular distances.
• Identification of hydrogen bonding interactions (O-H⋯O and N-H⋯O).

Main Results:

• The crystal structure is characterized by extended chains of hydrogen sulfate anions linked by O-H⋯O hydrogen bonds.
• Each hydrogen sulfate anion acts as a bridge, connecting to a 4-acetyl-pyridinium cation.
• A significant N-H⋯O hydrogen bond was observed between the pyridinium nitrogen and a sulfate oxygen.

Conclusions:

• The crystal structure is dominated by a network of hydrogen bonds involving both anions and cations.
• The observed hydrogen bonding pattern dictates the packing and stability of the crystal.
• This study provides fundamental insights into the solid-state chemistry of pyridinium salts with hydrogen sulfate counterions.