3,3'-Dichloro-biphenyl-4,4'-diaminium sulfate

Area of Science:

• Crystallography
• Organic Chemistry
• Materials Science

Background:

• Understanding the three-dimensional arrangement of atoms in organic compounds is crucial for predicting their properties.
• Crystal engineering utilizes intermolecular interactions to design materials with specific characteristics.

Purpose of the Study:

• To elucidate the crystal structure and intermolecular interactions of the title compound, C(12)H(12)Cl(2)N(2) (2+)·SO(4) (2-).
• To investigate the spatial arrangement of the organic cation and its influence on crystal packing.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
• Analysis of bond lengths, bond angles, and dihedral angles provided insights into the geometry.
• Intermolecular interactions, specifically hydrogen bonding, were identified and analyzed.

Main Results:

• The crystal structure was solved, revealing the arrangement of the organic dication and sulfate anion.
• A significant dihedral angle of 48.7 (2)° between the two rings of the organic cation indicates a non-planar conformation.
• Multiple N-H⋯O hydrogen bonds were observed, connecting the ammonium groups of the cation to the sulfate anions, forming an extended network.

Conclusions:

• The title compound exhibits a non-planar conformation due to the dihedral angle between its aromatic rings.
• Hydrogen bonding plays a key role in stabilizing the crystal lattice, linking the organic cations and inorganic anions.
• The structural findings provide a basis for understanding the physical and chemical properties of this compound.