Related Experiment Video
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
2-[(E)-2-(1H-Indol-3-yl)ethen-yl]-1-methyl-pyridinium 4-bromo-benzene-sulfonate
Abstract:
In the title compound, C(16)H(15)N(2) (+)·C(6)H(4)BrO(3)S(-), the cation exists in the E configuration and is essentially planar with a dihedral angle of 3.10 (5)° between the pyridinium ring and the indole ring system. The π-conjugated planes of the cation and the anion are inclined to each other at a dihedral angle of 64.32 (4)°. In the crystal structure, the cations are stacked in an anti-parallel manner along the a axis. The anions are linked into a chain along the a axis. The cations and the anions are linked into a three-dimensional network by N-H⋯O and weak C-H⋯O hydrogen bonds. The crystal structure is further stabilized by C-H⋯π inter-actions. A π-π inter-action between the five-membered heterocyclic ring of the indole system and the pyridinium ring is also observed with a centroid-centroid distance of 3.5855 (7) Å.
More Related Videos
14:11Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
08:56Synthesis of a Borylated Ibuprofen Derivative Through Suzuki Cross-Coupling and Alkene Boracarboxylation Reactions
Published on: November 30, 2022
Related Concept Videos
NMR Spectroscopy of Benzene Derivatives
Electrophilic Aromatic Substitution: Sulfonation of Benzene
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene
Nomenclature of Aromatic Compounds with Multiple Substituents
For disubstituted benzene derivatives, with two groups attached to the benzene ring, three constitutional isomers are possible. For example, consider dimethyl benzene, often called xylene, where the second methyl group can be substituted at the second, third, or fourth carbon. The relative position of the substituents is represented by prefixes ortho, meta, or...
Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene
Preparation and Reactions of Sulfides