Theoretical infrared and terahertz spectra of an RDX/aluminum complex

The Journal of Physical Chemistry. a
Carlos Guadarrama-PérezPerla B Balbuena

Abstract

Density functional theory is employed to characterize the infrared and terahertz spectra of an explosive molecular species, RDX, deposited over an aluminum surface, modeled as a planar cluster of Al(16). Changes in the inter- and intramolecular vibrational modes are systematically analyzed starting from the isolated monomer, dimer, and tetramer and then considering the interactions of the monomer with an Al plate. The results are compared to available experimental information for RDX films on Al surfaces. It is found that the RDX molecule changes conformation because of the interaction with the model Al surface, becoming closer to an AAA conformation with the three NO(2) groups in nearly axial positions. The calculated spectra serve as an initial guideline to interpret the main peaks of previously reported RDX films on Al.

References

Sep 15, 1988·Physical Review A: General Physics·A D Becke
Mar 18, 2006·The Journal of Chemical Physics·Sylke BoydPeter Politzer
Jan 1, 2008·Acta Crystallographica. Section E, Structure Reports Online·Patrick HakeyTimothy Korter

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Citations

Oct 23, 2012·Journal of Molecular Modeling·Julibeth M Martínez de la Hoz, Perla B Balbuena
Sep 26, 2019·Analytical Chemistry·Kevin J MajorKenneth J Ewing
Sep 15, 2021·Physical Chemistry Chemical Physics : PCCP·Peter A BanksMichael T Ruggiero
Oct 14, 2021·Applied Spectroscopy·Kevin J MajorKenneth J Ewing

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