Singh Jatinder, Thaltiri Vikranth, Staples Richard J, Shreeve Jean'ne M
Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343, United States.
Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States.
Org Lett. 2024 Jul 19;26(28):5946-5950. doi: 10.1021/acs.orglett.4c01870. Epub 2024 Jul 9.
Two energetic isomers of chemically unstable 3,5-bis(dinitromethyl)-4-nitro-1-pyrazole (), namely, 4-methyl-3,5-dinitro-1-(trinitromethyl)-1-pyrazole () and 5-methyl-3,4-dinitro-1-(trinitromethyl)-1-pyrazole (), each containing five nitro groups and having the same chemical composition, exhibit major differences in their physiochemical properties. These include density, enthalpy of formation, temperature of decomposition, and sensitivity to impact and friction. Notably, both isomer and isomer demonstrate superior thermal stability compared to isomer , making them promising candidates as safer energetic materials.
化学性质不稳定的3,5-双（二硝基甲基）-4-硝基-1-吡唑（）的两种高能异构体，即4-甲基-3,5-二硝基-1-（三硝基甲基）-1-吡唑（）和5-甲基-3,4-二硝基-1-（三硝基甲基）-1-吡唑（），每种都含有五个硝基且化学组成相同，但其物理化学性质存在重大差异。这些性质包括密度、生成焓、分解温度以及对冲击和摩擦的敏感度。值得注意的是，异构体和异构体均显示出比异构体更高的热稳定性，使其有望成为更安全的含能材料候选物。
