Study of Physicochemical and Explosive Properties of a 2,4,6-Trinitrotoluene/Aniline Cocrystal Solvate
Abstract
In the development of crystal engineering and supramolecular chemistry, cocrystallization has been used as a way to develop novel explosives with tailored properties. We present a novel cocrystal solvate composed of 2,4,6-trinitrotoluene (TNT) and aniline that exhibits unique physicochemical and explosive properties. X-ray diffraction studies reveal the crystallographic structure to contain TNT and aniline in a 1:1 molecular ratio. The crystals themselves exhibit a vibrant, ruby red color that likely results due to a charge-transfer interaction between the overlapping π-orbitals of the aromatic rings. The most notable evidence for a charge-transfer complex is the appearance of a broad absorbance peak in the visible region which is not present in the spectrum of either pure component. Comparisons of the cocrystal solvate to that of pure TNT are conducted to determine thermodynamic and kinetic parameters using both experimental and theoretical techniques. Lastly, the desolvation of aniline from the cocrystal solvate was also investigated using both in situ powder X-ray diffraction and atomic force microscopy measurements to monitor changes in the crystal structure and surface topography, respectively.
- Authors:
-
- Texas Tech Univ., Lubbock, TX (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1592023
- Report Number(s):
- LLNL-JRNL-797707
Journal ID: ISSN 1528-7483; 997954
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Crystal Growth and Design
- Additional Journal Information:
- Journal Volume: 20; Journal Issue: 1; Journal ID: ISSN 1528-7483
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Fondren, Nadia S., Fondren, Zachary T., Unruh, Daniel K., Maiti, Amitesh, Cozzolino, Anthony, Lee, Yong Joon, Hope-Weeks, Louisa, and Weeks, Brandon L. Study of Physicochemical and Explosive Properties of a 2,4,6-Trinitrotoluene/Aniline Cocrystal Solvate. United States: N. p., 2019.
Web. doi:10.1021/acs.cgd.9b00779.
Fondren, Nadia S., Fondren, Zachary T., Unruh, Daniel K., Maiti, Amitesh, Cozzolino, Anthony, Lee, Yong Joon, Hope-Weeks, Louisa, & Weeks, Brandon L. Study of Physicochemical and Explosive Properties of a 2,4,6-Trinitrotoluene/Aniline Cocrystal Solvate. United States. https://doi.org/10.1021/acs.cgd.9b00779
Fondren, Nadia S., Fondren, Zachary T., Unruh, Daniel K., Maiti, Amitesh, Cozzolino, Anthony, Lee, Yong Joon, Hope-Weeks, Louisa, and Weeks, Brandon L. Tue .
"Study of Physicochemical and Explosive Properties of a 2,4,6-Trinitrotoluene/Aniline Cocrystal Solvate". United States. https://doi.org/10.1021/acs.cgd.9b00779. https://www.osti.gov/servlets/purl/1592023.
@article{osti_1592023,
title = {Study of Physicochemical and Explosive Properties of a 2,4,6-Trinitrotoluene/Aniline Cocrystal Solvate},
author = {Fondren, Nadia S. and Fondren, Zachary T. and Unruh, Daniel K. and Maiti, Amitesh and Cozzolino, Anthony and Lee, Yong Joon and Hope-Weeks, Louisa and Weeks, Brandon L.},
abstractNote = {In the development of crystal engineering and supramolecular chemistry, cocrystallization has been used as a way to develop novel explosives with tailored properties. We present a novel cocrystal solvate composed of 2,4,6-trinitrotoluene (TNT) and aniline that exhibits unique physicochemical and explosive properties. X-ray diffraction studies reveal the crystallographic structure to contain TNT and aniline in a 1:1 molecular ratio. The crystals themselves exhibit a vibrant, ruby red color that likely results due to a charge-transfer interaction between the overlapping π-orbitals of the aromatic rings. The most notable evidence for a charge-transfer complex is the appearance of a broad absorbance peak in the visible region which is not present in the spectrum of either pure component. Comparisons of the cocrystal solvate to that of pure TNT are conducted to determine thermodynamic and kinetic parameters using both experimental and theoretical techniques. Lastly, the desolvation of aniline from the cocrystal solvate was also investigated using both in situ powder X-ray diffraction and atomic force microscopy measurements to monitor changes in the crystal structure and surface topography, respectively.},
doi = {10.1021/acs.cgd.9b00779},
journal = {Crystal Growth and Design},
number = 1,
volume = 20,
place = {United States},
year = {Tue Dec 03 00:00:00 EST 2019},
month = {Tue Dec 03 00:00:00 EST 2019}
}
Web of Science
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