Thermochemical Investigation of Tetrazole-Based Green Explosive Motifs: Experimental Vapor Pressures of N-(Fluoro)methylated Aminotetrazoles

Neuer, Andreas; Bikelyte, Greta; Lommel, Marcus and Klapötke, Thomas M. (2022): Thermochemical Investigation of Tetrazole-Based Green Explosive Motifs: Experimental Vapor Pressures of N-(Fluoro)methylated Aminotetrazoles. In: Journal of Chemical and Engineering Data, Vol. 67, No. 11: pp. 3457-3467

Abstract

The experimental vapor pressures of thermally modified energetic materials 2-(fluoromethyl)-1H-tetrazol-5-amine and its isomer 1-(fluoromethyl)-1H-tetrazol-5-amine were measured for the first time with the chromatography-assisted transpiration method and compared with the unsubstituted 1H-tetrazol-5-amine as well as with the methylated analogues. The resulting p-T fitting equations based on the Clausius-Clapeyron equation and the enthalpy of sublimation at the reference temperature of 298.15 K were determined for the five compounds under study, and the results are as follows: (93.8 +/- 1.0) kJ center dot mol-1 for 2-(fluoromethyl)-1H-tetrazol-5-amine, (88.7 +/- 1.3) kJ center dot mol-1 for 2-methyl-1H-tetrazol-5-amine, (112.6 +/- 2.6) kJ center dot mol-1 for 1-(fluoromethyl)-1H-tetrazol-5-amine, (118.1 +/- 2.0) kJ center dot mol-1 for 1-methyl-1H-tetrazol-5-amine, and (116.6 +/- 2.2) kJ center dot mol-1 for 1H-tetrazol-5-amine. The p-T fitting equations were used to extrapolate to 298.15 K, and the corresponding vapor pressure results were reported in this work.

• Item Type: Journal article
• Faculties: Chemistry and Pharmacy > Department of Chemistry
• Subjects: 500 Science > 540 Chemistry
• ISSN: 0021-9568
• Language: English