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Although TKX\u201050 is one of the most promising new\u2010generation energetic materials, contradictory reports are found in the literature with regard to its solid enthalpy of formation. The standard (<jats:italic>p<\/jats:italic><jats:sup>o<\/jats:sup>=10<jats:sup>5<\/jats:sup>\u2005Pa) molar enthalpy of formation of crystalline TKX\u201050, (175.3\u00b11.9) kJ\u2009\u22c5\u2009mol<jats:sup>\u22121<\/jats:sup>, was determined experimentally based on the measured standard massic energy of combustion, determined through static\u2010bomb combustion calorimetry. Additionally, the standard molar enthalpy of sublimation of TKX\u201050, at <jats:italic>T<\/jats:italic>=298.15\u2005K, (165.0\u00b12.4) kJ\u2009\u22c5\u2009mol<jats:sup>\u22121<\/jats:sup>, was derived from vapor pressure measurements determined by a Knudsen mass\u2010loss effusion technique. Finally, different approaches were used in attempts to calculate the standard enthalpy of formation of TKX\u201050 in the solid state. A critical overview and assessment of the data on the enthalpy of formation of TKX\u201050 is also presented.<\/jats:p>","DOI":"10.1002\/prep.202200361","type":"journal-article","created":{"date-parts":[[2023,3,28]],"date-time":"2023-03-28T03:10:49Z","timestamp":1679973049000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["On the Enthalpy of Formation and Enthalpy of Sublimation of Dihydroxylammonium 5,5\u2032\u2010bitetrazole\u20101,1\u2032\u2010dioxide (TKX\u201050)"],"prefix":"10.1002","volume":"48","author":[{"given":"Ana L. R.","family":"Silva","sequence":"first","affiliation":[{"name":"Research Centre in Chemistry (CIQUP), Institute of Molecular Sciences (IMS) Department of Chemistry and Biochemistry Faculty of Sciences University of Porto  Rua do Campo Alegre P-4169-007 Porto Portugal"}]},{"given":"Ana R. R. P.","family":"Almeida","sequence":"additional","affiliation":[{"name":"Research Centre in Chemistry (CIQUP), Institute of Molecular Sciences (IMS) Department of Chemistry and Biochemistry Faculty of Sciences University of Porto  Rua do Campo Alegre P-4169-007 Porto Portugal"}]},{"given":"Maria D. M. C.","family":"Ribeiro da Silva","sequence":"additional","affiliation":[{"name":"Research Centre in Chemistry (CIQUP), Institute of Molecular Sciences (IMS) Department of Chemistry and Biochemistry Faculty of Sciences University of Porto  Rua do Campo Alegre P-4169-007 Porto Portugal"}]},{"given":"Jelena","family":"Reinhardt","sequence":"additional","affiliation":[{"name":"Department of Chemistry Inorganic Chemistry Chair of Small Molecule and Energetic Materials Research LMU Munich  Butenandtstra\u00dfe 5\u201313 81377 Munich Germany"}]},{"given":"Thomas M.","family":"Klap\u00f6tke","sequence":"additional","affiliation":[{"name":"Department of Chemistry Inorganic Chemistry Chair of Small Molecule and Energetic Materials Research LMU Munich  Butenandtstra\u00dfe 5\u201313 81377 Munich Germany"}]}],"member":"311","published-online":{"date-parts":[[2023,6]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1039\/c2jm33646d"},{"key":"e_1_2_9_3_1","unstructured":"\u00a0"},{"key":"e_1_2_9_4_2","unstructured":"TKX-50: A highly promising secondary explosive Klap\u00f6tke T.\u2005M. in:Materials Research and Applications (Select Papers from JCH8-2019) Trache D. 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