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Synthesis of AgN₅ and its extended 3D energetic framework.

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]-, constructed from silver and cyclo-N₅-. 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-N₅- complex, devoid of stabilizing molecules and ions, such as H₂O, H₃O⁺, and NH₄⁺, constitutes a major advance in pentazole chemistry.

SUBMITTER: Sun C

PROVIDER: S-EPMC5871778 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

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Synthesis of AgN5 and its extended 3D energetic framework.

Sun Chengguo C Zhang Chong C Jiang Chao C Yang Chen C Du Yang Y Zhao Yue Y Hu Bingcheng B Zheng Zhansheng Z Christe Karl O KO

Nature communications 20180328 1

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]-, constructed from silver ...[more]

PMID: 29593262

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