(E,Z)-2-(2-chloro-5-nitrostyryl)-1-(1-propenyl)benzimidazole

Area of Science:

• Organic Chemistry
• Crystallography
• Molecular Structure

Background:

• Benzimidazole derivatives are important scaffolds in medicinal chemistry.
• Substituted benzaldehydes are versatile building blocks in organic synthesis.
• Understanding molecular geometry is crucial for predicting chemical properties.

Purpose of the Study:

• To synthesize and characterize a novel organic compound containing benzimidazole and nitrobenzene moieties.
• To elucidate the molecular structure and conformation of the synthesized compound.
• To investigate the structural implications of conjugating aromatic systems via a vinyl linker.

Main Methods:

• Condensation reaction between 2-chloro-5-nitrobenzaldehyde and 2-methyl-1-propenylbenzimidazole.
• Single-crystal X-ray diffraction analysis to determine the three-dimensional molecular structure.
• Analysis of bond lengths, bond angles, and dihedral angles to describe the molecular conformation.

Main Results:

• Successful synthesis of the title compound C18H14ClN3O2.
• The crystal structure reveals a molecule composed of 2-chloro-5-nitrobenzene and 1-(Z)-propenylbenzimidazole units.
• The two aromatic systems are conjugated through a vinyl group, with a small dihedral angle of 1.4(6) degrees between them.
• The propenyl group exhibits a dihedral angle of 112.9(9) degrees relative to the benzimidazole plane, indicating a non-planar conformation.

Conclusions:

• The study reports the synthesis and detailed structural analysis of a novel C18H14ClN3O2 compound.
• The molecular geometry, characterized by specific dihedral angles, provides insights into the electronic conjugation and spatial arrangement of the aromatic systems.
• The findings contribute to the understanding of structure-property relationships in conjugated organic molecules containing benzimidazole scaffolds.