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Updated: May 10, 2026

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Iridium(III) Luminescent Probe for Detection of the Malarial Protein Biomarker Histidine Rich Protein-II
Published on: July 7, 2015
l-Histidinium p-toluene-sulfonate
Srinivasan Muralidharan1, Perumal Nagapandiselvi, Thothadri Srinivasan
1Department of Physics, Anna University, Chennai 600 025, India.
Summary
The crystal structure of a salt containing imidazole and toluene rings was determined. Hydrogen bonds and C-H interactions form a 3D network, revealing molecular packing details.
Area of Science:
- Crystallography
- Supramolecular Chemistry
Background:
- Understanding the packing of organic salts is crucial for materials science.
- Imidazole and toluene derivatives are common structural motifs in various chemical compounds.
Purpose of the Study:
- To determine the crystal structure of the title salt (C6H10N3O2 (+)·C7H7O3S(-)).
- To investigate the intermolecular interactions governing the crystal packing.
Main Methods:
- Single-crystal X-ray diffraction analysis was employed.
- The crystal structure was solved and refined.
Main Results:
- The crystal structure reveals a dihedral angle of 70.93° between the imidazole and toluene rings.
- Two-dimensional networks are formed by N-H⋯O and C-H⋯O hydrogen bonds.
- These networks are further connected by C-H⋯π interactions to form a three-dimensional structure.
Conclusions:
- The study elucidates the detailed supramolecular architecture of the title salt.
- The combination of hydrogen bonding and C-H⋯π interactions dictates the formation of the 3D crystal network.

