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Updated: Jun 1, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
Benzyl-tributyl-ammonium 4-hydroxy-naphthalene-2-sulfonate
1Department of Applied Physics, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, 240-8501 Yokohama, Japan.
This study details the crystal structure of a charge-control agent used in electrophotography toners. The analysis reveals specific hydrogen bonding and molecular arrangements critical for its function.
Area of Science:
- Materials Science
- Crystallography
- Organic Chemistry
Background:
- Electrophotography relies on specialized toners for image formation.
- Charge-control agents are crucial components influencing toner performance.
- Understanding molecular structure is key to optimizing material properties.
Purpose of the Study:
- To elucidate the crystal structure of a specific charge-control agent (C(19)H(34)N(+)·C(10)H(7)O(4)S(-)).
- To investigate the intermolecular interactions governing the compound's solid-state organization.
- To provide structural insights relevant to its application in electrophotography toners.
Main Methods:
- Single-crystal X-ray diffraction analysis was employed.
- The crystal structure was solved and refined.
- Intermolecular hydrogen bonding and molecular packing were analyzed.
Main Results:
- The crystal structure features centrosymmetric anions linked by O-H⋯O hydrogen bonds.
- A dimer arrangement was observed with offset naphthalene skeletons (1.6 Å separation).
- Disordered ethyl residues in butyl groups were modeled with site occupancies.
Conclusions:
- The determined crystal structure provides a molecular basis for the charge-control agent's properties.
- Hydrogen bonding and molecular packing significantly influence the compound's solid-state behavior.
- Structural insights can guide the design of improved electrophotography materials.
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