Combination of four oxadiazole rings for the generation of energetic materials with high detonation performance, low sensitivity and excellent thermal stability. Issue 22 (22nd May 2017)

• Record Type: Journal Article
• Authors: Sun, Qi; Shen, Cheng; Li, Xin; Lin, Qiuhan; Lu, Ming
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 22(2017)
• Page Start: 11063
• Page End: 11070
• Publication Date: 2017-05-22
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta02209c
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Energetic materials, which are comprised of four oxadiazole rings and linked by three different bridges ([–NH–NH–], [–NN–], and [–NN(O)–]) are developed. Abstract : Energetic materials, which are comprised of four oxadiazole rings and linked by three different bridges ([–NH–NH–], [–NN–], and [–NN(O)–]) are developed. All synthesized compounds were fully characterized and five of them were further determined by single-crystal X-ray diffraction. As supported by X-ray data, closed packing and extensive hydrogen-bonding interactions result in high density, low sensitivity, and excellent thermal stability. It is worth pointing out that the [–NN–] compound3 has a decomposition temperature of 322 °C, which, to our knowledge, is the highest known value for all compounds consisting of 1, 2, 4- and 1, 2, 5-oxadiazole rings. Dihydrazinium salt14 exhibits excellent detonation performance ( D = 9042 m s −1, P = 35.0 GPa, and IS > 40 J), superior even to RDX. This novel design strategy, which combines four oxadiazole rings into one molecule, promises a fine balance between high detonation performance and low sensitivity and opens a new chapter in oxadiazole chemistry.