title: New roles for 1,1-diamino-2,2-dinitroethene (FOX-7): halogenated FOX-7 and azo-bis(diahaloFOX) as energetic materials and oxidizers.
abstract: The syntheses and full characterization of two new halogenated 1,1-diamino-2,2-dinitroethene (FOX-7) compounds and three halogenated azo-bridged FOX-7 derivatives are described. Some of these new structures demonstrate properties that approach those of the commonly used secondary explosive RDX (cyclo-1,3,5-trimethylene-2,4,6-trinitramine). All the compounds display hypergolic properties with common hydrazine-based fuels and primary aliphatic amines (ignition delay times of 2-53 ms). This is a new role that has yet to be reported for FOX-7 and its derivatives. Their physical and energetic properties have been investigated. All compounds were characterized by single-crystal X-ray crystallography, elemental analysis, infrared spectra, and differential scanning calorimetry. These new molecules as energetic materials and hypergolic oxidizers contribute to the expansion of the chemistry of FOX-7.
authors.affiliation: Department of Chemistry, University of Idaho, Moscow, Idaho 83833-2343, USA.
authors.forename: Thao T
authors.initials: TT
authors.lastname: Vo
authors.forename: Jiaheng
authors.initials: J
authors.lastname: Zhang
authors.forename: Damon A
authors.initials: DA
authors.lastname: Parrish
authors.forename: Brendan
authors.initials: B
authors.lastname: Twamley
authors.forename: Jean'ne M
authors.initials: JM
authors.lastname: Shreeve