{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T18:39:25Z","timestamp":1785436765921,"version":"3.56.0"},"reference-count":48,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T00:00:00Z","timestamp":1783036800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["22375189"],"award-info":[{"award-number":["22375189"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"award":["22375189"],"award-info":[{"award-number":["22375189"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Herein, a novel insensitive diazonium inner salt of 2-nitro-5-oxo[1,2,4]triazolo[1,5-c]pyrimidin-8-diazonium-7-olate (NTPD) was synthesized through a concise three-step route. The structure and performance of this material were comprehensively studied. Single-crystal X-ray diffraction analysis revealed that NTPD possesses a distinctive fused-ring framework featuring an inner salt (zwitterionic) structure, wherein the diazonium and phenolate functionalities are intramolecularly integrated within a compact, highly conjugated heterocyclic system. Furthermore, in comparison with previously reported diazonium compounds, NTPD exhibits a superior combination of enhanced thermal stability and significantly reduced mechanical sensitivity. Specifically, its onset decomposition temperature reaches 206 \u00b0C, representing a substantial improvement over conventional diazo derivatives, while its impact sensitivity of 7 J positions it among the least sensitive diazonium-based energetic materials reported to date. The exceptional performance of NTPD is strongly attributed to its nearly planar molecular geometry and the extensive hydrogen-bonding network present within its crystal lattice, which collectively reinforce structural rigidity, enhance packing stability, and effectively dissipate external mechanical stimuli.<\/jats:p>","DOI":"10.3390\/molecules31132340","type":"journal-article","created":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T09:34:11Z","timestamp":1783071251000},"page":"2340","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Synthesis, Structure and Performance of an Insensitive Diazonium Inner Salt Energetic Material"],"prefix":"10.3390","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-7736-4197","authenticated-orcid":false,"given":"Haifeng","family":"Wang","sequence":"first","affiliation":[{"name":"National Key Laboratory of Chemical Explosion Safety, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang 621900, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinxin","family":"Wang","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Chemical Explosion Safety, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang 621900, China"},{"name":"National Key Laboratory of Aerospace Chemical Power, Xiangyang 441003, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2167-6475","authenticated-orcid":false,"given":"Ruibing","family":"Lv","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Chemical Explosion Safety, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang 621900, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yapeng","family":"Yao","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Chemical Explosion Safety, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang 621900, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pengzhao","family":"Han","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Chemical Explosion Safety, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang 621900, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenquan","family":"Zhang","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Chemical Explosion Safety, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang 621900, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kangcai","family":"Wang","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Chemical Explosion Safety, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang 621900, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,7,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"267","DOI":"10.1016\/j.enmf.2025.09.001","article-title":"Synthetic chemistry of energetic materials: Evolution, current trends, and AI-driven future","volume":"6","author":"Zeng","year":"2025","journal-title":"Energ. 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