(1E,2E)-1,2-Bis[1-(2-methoxy-phen-yl)ethyl-idene]hydrazine.

Area of Science:

• Crystallography
• Organic Chemistry
• Materials Science

Background:

• Understanding the solid-state structure of organic molecules is crucial for predicting their physical and chemical properties.
• The title compound, C(18)H(20)N(2)O(2), presents an interesting case for crystallographic analysis due to its potential for diverse molecular arrangements.

Purpose of the Study:

• To elucidate the detailed crystal structure of the title compound, C(18)H(20)N(2)O(2).
• To analyze the molecular conformation, including bond configurations and dihedral angles.
• To investigate the intermolecular interactions and packing motifs in the solid state.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structure.
• Analysis of crystallographic data included bond lengths, bond angles, dihedral angles, and intermolecular contacts.
• The molecular geometry and packing arrangements were visualized and analyzed.

Main Results:

• Two crystallographically independent molecules of C(18)H(20)N(2)O(2) were identified in the asymmetric unit.
• Both molecules adopt an E,E configuration around the C=N double bonds.
• Dihedral angles between benzene rings range from 16.89° to 18.84°. Methoxy groups are largely coplanar with their attached benzene rings.
• Intramolecular C-H⋯O hydrogen bonding was observed in one molecule.
• Crystal packing features ribbons along the c-axis, further stacked along the a-axis, stabilized by C⋯N and C⋯O short contacts (3.306–3.427 Å and 3.328–3.386 Å, respectively).
• C-H⋯π interactions were also identified.

Conclusions:

• The study provides a comprehensive crystallographic description of C(18)H(20)N(2)O(2).
• The observed molecular conformation and crystal packing highlight specific intermolecular forces governing the solid-state structure.
• These findings contribute to the understanding of structure-property relationships in related organic compounds.