Premium
The High‐Pressure Characterization of Energetic Materials: 1,4‐Dimethyl‐5‐Aminotetrazolium 5‐Nitrotetrazolate
Author(s) -
Ciezak Jennifer A.
Publication year - 2011
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201100031
Subject(s) - isostructural , synchrotron , infrared , diffraction , anisotropy , materials science , phase transition , synchrotron radiation , x ray crystallography , chemistry , analytical chemistry (journal) , crystallography , thermodynamics , optics , crystal structure , organic chemistry , physics
Abstract In‐situ high‐pressure room temperature synchrotron X‐ray diffraction and infrared microspectroscopy were used to examine the structural and vibrational properties and the equation of state of 1,4‐dimethyl‐5‐aminotetrazolium 5‐nitrotetrazolate (DMATNT). The X‐ray measurements show a smoothly varying pressure‐volume relationship to 20 GPa. However, the anisotropic ratios of the unit cell parameters reveal a discontinuity near 3.3 GPa, which can be attributed to an irreversible isostructural phase transition. A significant increase in the Infrared spectral intensity near this pressure coupled with Dayvdov splitting of the NO 2 bending and scissoring modes suggest the transition results in a skewing of the NO 2 groups and increasing asymmetry of the hydrogen bonding sublattice.