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1,4-Bis(fluoro-meth-yl)benzene.

Hoong-Kun Fun, Reza Kia, P S Patil

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|May 18, 2011

Summary

This summary is machine-generated.

This study details the crystal structure of a difluoro compound, C(8)H(8)F(2), revealing short intermolecular C-F and F-F contacts. These interactions lead to the formation of 2D networks in the crystal lattice.

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Area of Science:

Solid-state chemistry
Crystallography
Supramolecular chemistry

Background:

Understanding intermolecular interactions is crucial for predicting and controlling material properties.
Fluorinated organic compounds exhibit unique electronic and structural characteristics due to fluorine's high electronegativity.

Purpose of the Study:

To elucidate the crystal structure of the title compound, C(8)H(8)F(2).
To investigate the nature and significance of intermolecular contacts within the crystal lattice.
To characterize the self-assembly of molecules into higher-order structures.

Main Methods:

Single-crystal X-ray diffraction analysis was employed to determine the three-dimensional molecular arrangement.
Analysis of interatomic distances and coordination numbers to identify significant intermolecular interactions.
Computational methods may be used to further analyze bonding and energetics (though not explicitly stated in the abstract).

Main Results:

The C(8)H(8)F(2) molecule crystallizes with the molecule lying across a crystallographic inversion center.
Short C⋯F (2.8515 Å) and F⋯F (2.490 Å) contacts were observed, shorter than van der Waals radii sums.
Disordered fluorine and methylene hydrogen atoms were noted, with a site occupancy ratio of approximately 0.63:0.37.
Intermolecular C-H⋯F interactions form infinite chains along the b-axis.
C-H⋯π interactions further link molecules into a two-dimensional network parallel to the (101) plane.

Conclusions:

The crystal structure is stabilized by a combination of short halogen contacts and hydrogen bonding interactions.
The observed C-H⋯F and C-H⋯π interactions dictate the formation of a 2D supramolecular network.
The findings contribute to the understanding of crystal engineering principles for fluorinated organic materials.