The thermal decomposition of a number of analogues of hexanitrohexaazaisowurtzitan (CL-20), in where one or more -nitro groups have been replaced by another explosophoric unit (diverse -alkylnitramine groups or - trinitroethyl), has been studied by methods of isothermal and non-isothermal kinetics. It was found that replacing the -nitro group with even a more thermally stable substituent leads to a decrease in the stability of the nitrated hexaazaisowurtzitane framework. It was suggested that the substituent distorts the symmetry of the strained hexaazaisowurtzitane cage, which affects the strength of the N–NO bond. When a substituent less stable than the N-nitro group in the parent CL-20 is installed, the initial stage of degradation is determined by the decomposition kinetics of this substituent. One of the objects of this study, 4,10-dinitro-2,6,8,12-tetrakis (2,2,2-trinitroethyl) −2,4,6,8,10,12-hexaazaisowurtzitane (), was synthesized for the first time; it was fully characterized and also confirmed by X-ray structural data.

中文翻译：

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CL-20类似物：结构-热稳定性/分解机制关系

六硝基六氮杂异伍兹坦 (CL-20) 的许多类似物的热分解，其中一个或多个硝基已被另一种爆炸单元（多个 - 烷基硝胺基团或 - 三硝基乙基）取代，已通过等温和非等温方法研究了热分解。 -等温动力学。研究发现，用更热稳定的取代基取代硝基会导致硝化六氮杂异武兹烷骨架的稳定性降低。有人认为取代基扭曲了应变六氮杂异武兹烷笼的对称性，从而影响了 N-NO 键的强度。当安装了比母体 CL-20 中的 N-硝基稳定的取代基时，降解的初始阶段由该取代基的分解动力学决定。本研究的对象之一，4,10-二硝基-2,6,8,12-四(2,2,2-三硝基乙基)-2,4,6,8,10,12-六氮杂异伍兹烷()，是首次合成；它得到了充分的表征，并得到了 X 射线结构数据的证实。