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Related Experiment Video

Updated: May 26, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

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1-Bromo-2-[(E)-2-nitro-ethen-yl]benzene.

Pei-Hua Zhao, Zhan-Heng Feng, Mei Zhang

Acta Crystallographica. Section E, Structure Reports Online

|December 27, 2011

Summary

The crystal structure of C(8)H(6)BrNO(2) reveals a 22.99° dihedral angle between the benzene ring and nitro group. Short bromine-oxygen contacts form inversion dimers in the crystal lattice.

Area of Science:

Crystallography
Organic Chemistry
Solid-State Chemistry

Background:

Understanding molecular interactions and crystal packing is crucial in solid-state chemistry.
The study of halogenated nitroaromatic compounds provides insights into intermolecular forces.

Purpose of the Study:

To determine the crystal structure of the title compound, C(8)H(6)BrNO(2).
To analyze the molecular conformation, specifically the dihedral angle between the benzene ring and the nitro group.
To investigate intermolecular interactions, such as halogen bonding, within the crystal lattice.

Main Methods:

Single-crystal X-ray diffraction was employed to elucidate the three-dimensional structure of the compound.
Crystallographic data were analyzed to determine bond lengths, bond angles, and intermolecular contacts.

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Published on: September 12, 2018

Main Results:

The dihedral angle between the benzene ring and the nitro group was found to be 22.99(12)°.
Inversion dimers were observed in the crystal structure, stabilized by short bromine-oxygen (Br⋯O) contacts measuring 3.2319(17) Å.

Conclusions:

The crystal structure of C(8)H(6)BrNO(2) is characterized by a specific non-planar conformation.
The observed Br⋯O contacts indicate the presence of halogen bonding, influencing crystal packing and stability.