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Asma Iqbal¹, Toheed Akhter, Humaira Masood Siddiqi

¹Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan.

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|March 12, 2013

Summary

This summary is machine-generated.

This study details the crystal structure of a chlorinated nitroaromatic compound (C13H8ClNO4). Molecular analysis reveals specific dihedral angles between aromatic rings and nitro group orientation, with crystal packing facilitated by hydrogen bonds.

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Area of Science:

Crystallography
Organic Chemistry
Molecular Structure

Background:

Understanding the three-dimensional arrangement of atoms in organic molecules is crucial for predicting their properties and reactivity.
Chlorinated nitroaromatic compounds are important intermediates in various chemical syntheses.
Detailed structural analysis provides fundamental insights into intermolecular interactions.

Purpose of the Study:

To elucidate the detailed crystal structure of the title compound, C13H8ClNO4.
To quantify the spatial relationship between the aromatic rings and the nitro group.
To investigate the intermolecular interactions governing crystal packing.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
Dihedral angles were precisely measured to describe the conformation.
Analysis of intermolecular contacts, specifically hydrogen bonds, was performed.

Main Results:

The dihedral angle between the aromatic rings was determined to be 39.53(3)°.
The nitro group exhibited near-planarity with its attached ring, with a dihedral angle of 4.31(1)°.
Molecules were observed to form chains along the [001] direction through C-H⋯O hydrogen bonds.

Conclusions:

The study provides precise structural data for C13H8ClNO4, highlighting significant conformational features.
The observed hydrogen bonding network dictates the crystal packing, influencing bulk properties.
This structural information serves as a basis for further studies on related compounds.