Crystal and Vibrational Structure of Energetic 3,5-dinitro 1,3,5-oxadiazinane (DOD) by Single Crystal X-ray Diffractometry and Raman Spectroscopy
Technical Report,01 Jan 2016,31 Dec 2017
US Army Research Laboratory Aberdeen Proving Ground United States
Pagination or Media Count:
A prerequisite for establishing structure-property-performance relationships of materials is the understanding of their structures and crystal packing. Here, we report an isolation procedure for producing high-quality crystals of energetic 3,5-dinitro-1,3,5-oxadizinanae C3H6N4O5 and our studies on its room temperature crystal structure and packing by single crystal X-ray diffraction and its vibrational modes by Raman spectroscopy. The title compound consists of 2 nitrate groups attached to a chair-like hexagonal ring containing 3 carbon atoms, 2 nitrogen atoms, and an oxygen atom. Both nitrate groups adopt axial positions with respect to the ring and the dihedral angles between the nitrate groups, and the plane containing the 3-ring carbon atoms are 64.93 9 and 60.55 9, similar to those of -RDX involving its axial nitrate groups. Contacts between the oxygen and hydrogen atoms of adjacent molecules dominate the intermolecular interactions. Based on the title compounds unit cell constants, we determine a density of 1.732 gcm3 at 298 K, which agrees well with the value of 1.699 gcm3 obtained by quantum mechanical calculations using a temperature of 298 K.
- Atomic and Molecular Physics and Spectroscopy
- Ammunition and Explosives