| Structural and chemical properties of the nitrogen-rich energetic material triaminoguanidinium 1-methyl-5-nitriminotetrazolate under pressure. | |
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MedLine Citation:
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PMID: 22894358 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The structural and chemical properties of the bi-molecular, hydrogen-bonded, nitrogen-rich energetic material triaminoguanidinium 1-methyl-5-nitriminotetrazolate C(3)H(12)N(12)O(2) (TAG-MNT) have been investigated at room pressure and under high pressure isothermal compression using powder x-ray diffraction and Raman and infrared spectroscopy. A stiffening of the equation of state and concomitant structural relaxation between 6 and 14 GPa are found to correlate with Raman mode disappearances, frequency discontinuities, and changes in the pressure dependence of modes. These observations manifest the occurrence of a reversible martensitic structural transformation to a new crystalline phase. The onset and vanishing of Fermi resonance in the nitrimine group correlate with the stiffening of the equation of state and phase transition, suggesting a possible connection between these phenomena. Beyond 15 GPa, pressure induces irreversible chemical reactions, culminating in the formation of a polymeric phase by 60 GPa. |
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Authors:
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R Stewart McWilliams; Yasmin Kadry; Mohammad F Mahmood; Alexander F Goncharov; Jennifer Ciezak-Jenkins |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of chemical physics Volume: 137 ISSN: 1089-7690 ISO Abbreviation: J Chem Phys Publication Date: 2012 Aug |
Date Detail:
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Created Date: 2012-08-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0375360 Medline TA: J Chem Phys Country: United States |
Other Details:
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Languages: eng Pagination: 054501 Citation Subset: IM |
Affiliation:
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Howard University, Washington, DC 20059, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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