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

Area of Science:

• Organic Chemistry
• Crystallography
• Solid-State Chemistry

Background:

• Understanding the three-dimensional structure of organic molecules is crucial for predicting their properties and reactivity.
• Crystal structure analysis provides detailed insights into molecular conformation and intermolecular forces.

Purpose of the Study:

• To elucidate the crystal structure of the title compound, C(16)H(14)Br(2)N(2).
• To analyze the molecular geometry, including dihedral angles between key functional groups.
• To investigate intermolecular interactions governing the crystal packing.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
• Analysis of bond lengths, bond angles, and dihedral angles provided geometric details.
• Identification of non-covalent interactions, such as C-H⋯π and halogen bonds (C⋯Br contacts), was performed.

Main Results:

• The crystal structure reveals a molecule generated by a crystallographic twofold axis.
• Significant dihedral angles were measured between benzene rings (35.28°), ethyl-idinehydrazine units (87.67°), and between these units and benzene rings (63.81°).
• Molecules are arranged in layers parallel to the ac plane via C-H⋯π interactions, with observed C⋯Br short contacts.

Conclusions:

• The study provides a comprehensive structural characterization of C(16)H(14)Br(2)N(2) in the solid state.
• The observed dihedral angles define the molecule's conformation.
• Intermolecular C-H⋯π and C⋯Br interactions play a key role in the crystal packing and stability.