Synthesis of AgN5 and its extended 3D energetic framework

Chengguo Sun, Chong Zhang, Chao Jiang, Chen Yang, Yang Du, Yue Zhao, Bingcheng Hu (), Zhansheng Zheng and Karl O. Christe ()
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Chengguo Sun: Nanjing University of Science and Technology
Chong Zhang: Nanjing University of Science and Technology
Chao Jiang: Nanjing University of Science and Technology
Chen Yang: Nanjing University of Science and Technology
Yang Du: Nanjing University of Science and Technology
Yue Zhao: Nanjing University of Science and Technology
Bingcheng Hu: Nanjing University of Science and Technology
Zhansheng Zheng: Nanjing University of Science and Technology
Karl O. Christe: Nanjing University of Science and Technology

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: Abstract The pentazolate anion, as a polynitrogen species, holds great promise as a high-energy density material for explosive or propulsion applications. Designing pentazole complexes that contain minimal non-energetic components is desirable in order to increase the material’s energy density. Here, we report a solvent-free pentazolate complex, AgN5, and a 3D energetic-framework, [Ag(NH3)2]+[Ag3(N5)4]ˉ, constructed from silver and cyclo-N5ˉ. The complexes are stable up to 90 °C and only Ag and N2 are observed as the final decomposition products. Efforts to isolate pure AgN5 were unsuccessful due to partial photolytical and/or thermal-decomposition to AgN3. Convincing evidence for the formation of AgN5 as the original reaction product is presented. The isolation of a cyclo-N5ˉ complex, devoid of stabilizing molecules and ions, such as H2O, H3O+, and NH4+, constitutes a major advance in pentazole chemistry.

Date: 2018
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DOI: 10.1038/s41467-018-03678-y

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