N,N'-bis(2-methoxyphenyl)naphthalene-1,4-dicarboxamide

Area of Science:

• Crystal Engineering
• Supramolecular Chemistry
• Organic Solid-State Chemistry

Background:

• Understanding intermolecular interactions is crucial for designing crystalline materials.
• The conformation of aromatic rings significantly influences crystal packing and properties.
• Hydrogen bonding and C-H...pi interactions are key non-covalent forces in crystal formation.

Purpose of the Study:

• To elucidate the crystal structure of the title compound (C26H22N2O4).
• To investigate the role of molecular conformation in directing crystal packing.
• To identify the specific intermolecular interactions responsible for the observed crystal structure.

Main Methods:

• Single-crystal X-ray diffraction analysis was employed to determine the crystal structure.
• Analysis of the anti-C=O orientation and relative conformations of the naphthalene and benzene rings.
• Identification and characterization of hydrogen bonds (N-H...O) and C-H...pi interactions.

Main Results:

• The title compound crystallizes in an anti-C=O orientation.
• The two N-substituted benzene rings adopt different conformations relative to the naphthalene core.
• Two strong N-H...O hydrogen bonds and one C-H...pi interaction were identified, leading to the formation of molecular chains.

Conclusions:

• The crystal structure of C26H22N2O4 is dictated by the interplay between ring conformations and specific non-covalent interactions.
• The observed anti-C=O orientation and hydrogen bonding patterns facilitate the assembly of one-dimensional molecular chains.
• This detailed structural analysis provides insights into the rational design of organic materials with specific solid-state architectures.