Document Detail


High-Pressure Characterization of Nitrogen-Rich Bis-triaminoguanidinium Azotetrazolate (TAGzT) by In-Situ Raman Spectroscopy.
MedLine Citation:
PMID:  23343336     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Compounds rich in nitrogen are attracting significant interest not only because of their high energy content, but becasue they are potentially more environmentally benign in comparison to conventional energetic materials. Given this interest, it is desirable to understand their molecular composition and structural variations with pressure in order to derive their stability and determine the conditions in which they transform physically or chemically. In this study, we examine the room temperature isothermal compression behavior of bis-triaminoguanidinium azotetrazolate (TAGzT) by in-situ Raman spectroscopy to pressures near 17 GPa. We assign the characteristic vibrational bands and report the effects of pressure on band intensity, linewidth, and frequency shift. Two prominent peaks near 1370 and 1470 cm-1 arise from the C-N and N=N symmetric stretches, respectively. Overall, the intensity of these bands and others diminish with pressure and their spectral linewidths increase monotonically upon compression. The vibrational frequency modes blue shift linearly upon compression, indicating a generalized stiffening of the bonds as the pressure increases. These results, together with micro Raman spectroscopic analyses of the recovered, decompressed samples, suggest that TAGzT does not undergo any phase transitions within this pressure range. We estimate and report the C-N and N=N intermolecular bond lengths under compression.
Authors:
Kristopher D Behler; Jennifer A Ciezak-Jenkins; Rosario C Sausa
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-23
Journal Detail:
Title:  The journal of physical chemistry. A     Volume:  -     ISSN:  1520-5215     ISO Abbreviation:  J Phys Chem A     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9890903     Medline TA:  J Phys Chem A     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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