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Updated: May 26, 2026
08:43
Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives
Published on: January 19, 2016
4-Nitro-benzoic acid-N-(pyrimidin-2-yl)aniline (1/1)
Acta Crystallographica. Section E, Structure Reports Online
|January 6, 2012
Summary
This study details the crystal structure of a co-crystal formed by benzoic acid derivatives and an aniline derivative. Molecular interactions like hydrogen bonds and π-π stacking drive the formation of specific crystal architectures.
Area of Science:
- Crystal Engineering
- Supramolecular Chemistry
- Materials Science
Background:
- Co-crystals are crystalline solids composed of two or more different molecular components in a defined stoichiometric ratio.
- Understanding the intermolecular interactions within co-crystals is crucial for designing materials with tailored properties.
- Benzoic acid derivatives and aniline derivatives are common building blocks in crystal engineering.
Purpose of the Study:
- To elucidate the crystal structure of a novel co-crystal formed between a benzoic acid derivative and an aniline derivative.
- To analyze the conformational differences between independent molecules within the crystal lattice.
- To identify and characterize the key intermolecular interactions responsible for the co-crystal assembly.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the three-dimensional structure of the co-crystal.
- Analysis of crystallographic data to identify hydrogen bonding networks and other non-covalent interactions.
- Conformational analysis of the individual molecular components within the asymmetric unit.
Main Results:
- The asymmetric unit contains four independent molecules: two benzoic acid derivatives and two aniline derivatives.
- Significant conformational variations were observed in the carboxylic acid twists and dihedral angles of the aniline derivative.
- The crystal structure is stabilized by a combination of O-H⋯N and N-H⋯O hydrogen bonds forming eight-membered synthons, along with C-H⋯O interactions and π-π stacking.
Conclusions:
- The co-crystal structure reveals specific molecular arrangements driven by hydrogen bonding and π-π interactions.
- Conformational flexibility of the components plays a role in the crystal packing.
- The identified intermolecular interactions provide insights into the design principles for constructing ordered molecular assemblies.
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