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Herein we report the synthesis of 12 new ECC based on 1\u2010azidoethyl\u20105<jats:italic>H<\/jats:italic>\u2010tetrazole (AET) or 1\u2010ethyl\u20105<jats:italic>H<\/jats:italic>\u2010tetrazole (1\u2010ETZ) as nitrogen\u2010rich ligands as well as various central metals (Cu<jats:sup>2+<\/jats:sup>, Fe<jats:sup>2+<\/jats:sup>, Zn<jats:sup>2+<\/jats:sup>, Ag<jats:sup>+<\/jats:sup>) and anions such as perchlorate and nitrate. The influence of the increased endothermicity by adding an additional azide group was studied by comparing analogous ECC based on AET and 1\u2010ETZ. Furthermore, the compounds were extensively analyzed by XRD, IR, EA, solid\u2010state UV\/Vis, and DTA as well as their sensitivities toward impact and friction were determined with BAM standard techniques, together with their sensitivity against electrostatic discharge. The sensitivities were compared with the one toward ball drop impact measurements. Classical initiation tests (nitropenta filled detonators) and ignition by laser irradiation highly prove the potential use of the most promising compounds in lead\u2010free initiation systems.<\/jats:p>","DOI":"10.1002\/asia.201900269","type":"journal-article","created":{"date-parts":[[2019,4,3]],"date-time":"2019-04-03T10:11:01Z","timestamp":1554286261000},"page":"2018-2028","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":58,"title":["Comparison of 1\u2010Ethyl\u20105<i>H<\/i>\u2010tetrazole and 1\u2010Azidoethyl\u20105<i>H<\/i>\u2010tetrazole as Ligands in Energetic Transition Metal Complexes"],"prefix":"10.1002","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5494-9903","authenticated-orcid":false,"given":"Maximilian H. 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