2-Amino-benzimidazolium hydrogen sulfate

Area of Science:

• Crystallography
• Materials Science
• Supramolecular Chemistry

Background:

• Benzimidazole derivatives are important in medicinal chemistry and materials science.
• Understanding the crystal packing and intermolecular interactions is crucial for designing new materials and drugs.

Purpose of the Study:

• To characterize the crystal structure of the title benzimidazole salt.
• To investigate the hydrogen bonding interactions and their role in crystal packing.

Main Methods:

• Single-crystal X-ray diffraction was used to determine the molecular and crystal structure.
• Analysis of hydrogen bonding networks (N-H⋯O, O-H⋯O) was performed.

Main Results:

• The benzimidazole ring system in the title salt (C(7)H(8)N(3) (+)·HSO(4) (-)) exhibits planarity with a mean deviation of 0.0086(1) Å.
• Intermolecular interactions, specifically N-H⋯O and O-H⋯O hydrogen bonds, were identified.
• These interactions lead to the formation of a characteristic layer motif in the crystal structure.

Conclusions:

• The planar nature of the benzimidazole core is maintained in the solid state.
• Hydrogen bonding plays a significant role in organizing the crystal structure into a layered arrangement.
• This structural insight is valuable for the rational design of functional organic materials.