4-Amino-2-methyl-quinolinium hydrogensulfate dihydrate

Area of Science:

• Crystallography
• Materials Science
• Chemical Physics

Background:

• 4-amino-quinoline derivatives are important in medicinal chemistry.
• Understanding crystal structures informs material properties and drug design.
• Hydrogen bonding plays a crucial role in molecular recognition and crystal packing.

Purpose of the Study:

• To elucidate the crystal structure of the title compound, 4-amino-quinoline hydrogen sulfate dihydrate.
• To characterize the intermolecular interactions, specifically hydrogen bonding, within the crystal lattice.
• To provide a detailed structural analysis for potential applications.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structure.
• The asymmetric unit was analyzed, identifying protonated 4-amino-quinoline cations, hydrogen sulfate anions, and water molecules.
• Hydrogen bonding networks (N-H⋯O and O-H⋯O) were investigated.

Main Results:

• The crystal structure consists of two protonated 4-amino-quinoline cations, two hydrogen sulfate anions, and four water molecules per asymmetric unit.
• Extensive intermolecular hydrogen bonding networks involving N-H⋯O and O-H⋯O interactions were identified.
• The structural data provides precise details on the arrangement and bonding of the components.

Conclusions:

• The crystal structure of 4-amino-quinoline hydrogen sulfate dihydrate is characterized by significant hydrogen bonding.
• These interactions dictate the packing and stability of the crystalline material.
• The detailed structural insights can guide future research in related quinoline compounds.