Crystal structure of (E)-1-(4'-meth-oxy-[1,1'-biphen-yl]-4-yl)-3-(3-nitro-phen-yl)prop-2-en-1-one

Area of Science:

• Crystallography
• Organic Chemistry
• Materials Science

Background:

• Understanding the solid-state structure of organic compounds is crucial for predicting and controlling their physical and chemical properties.
• Crystallographic studies provide detailed information on molecular geometry, conformation, and intermolecular interactions.

Purpose of the Study:

• To elucidate the crystal structure of the title compound, C22H17NO4.
• To analyze the molecular conformation, isomeric form, and intermolecular interactions in the crystalline state.
• To investigate the packing arrangement and hydrogen bonding networks within the crystal.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structure.
• Analysis of bond lengths, bond angles, torsion angles, and dihedral angles provided insights into molecular geometry.
• Identification of hydrogen bonding interactions (C-H⋯O) and their role in crystal packing.

Main Results:

• The compound crystallizes with two independent molecules (A and B) in the asymmetric unit, both existing as E isomers.
• Significant twists and dihedral angles were observed between the aromatic rings in both molecules, indicating non-planar conformations.
• Molecules are arranged in a head-to-head manner, linked by C-H⋯O hydrogen bonds forming chains with specific ring motifs.
• Positional disorder of the methoxy group was observed in both molecules with varying occupancy ratios.

Conclusions:

• The study provides a comprehensive crystallographic analysis of C22H17NO4, detailing its unique molecular architecture and solid-state organization.
• The observed conformational preferences and hydrogen bonding patterns are key factors influencing the crystal packing and properties.
• The findings contribute to the understanding of structure-property relationships in organic crystalline materials.