New Energetic Materials - Structural Characterization.

The molecular structures of five new materials developed in ONR-sponsored explosivepropellant research are reported. The material 3,3-bis-azidomethyl oxetane BAMO was studied in three different forms. Using gas electron diffraction analysis, the molecular structure of the monomer of BAMO in the vapor phase was determined. A cyclic tetramer of BAMO was characterized with X-ray single-crystal diffraction analysis. Finally, a linear polymer of BAMO was studied as a semi-crystalline fiber using x-rays. Most of the features of the polymer molecular structure were determined from the fiber diffraction pattern. The crystal and molecular structure of a tetra-nitro compound, 4,7-bis-dinitrofluoromethyl-1,3-dioxepane, is reported this compound is a newly synthesized monomer developed during research on the synthesis of nitro-polymers. The crystal and molecular structure of bis5-amino-1,2,4-oxadiazole is also reported. It is an unusually stable synthetic intermediate obtained in research aimed at producing new types of high-density nitro-explosives. Author