The standard enthalpies of formation of 1,1-bis(methoxy-NNO-azoxy)-3-nitro-3-azabutane and 1,1,8,8-tetrakis (methoxy-NNO-azoxy)-3,6-dinitro-3,6-diazaoctane were experimentally determined to be 87.7 $$\pm$$ 3.9 and 283.8 $$\pm$$ 6.2 kJ/mol, respectively. Calculations have shown that solid composite propellants containing these two compounds as gasifying components in metal-free compositions based on an active binder and ammonium perchlorate are inferior in the maximum achievable effective impulse at the third stage of the rocket system $$I_{ef}$$ (3) to compositions based on HMX, but in designing special compositions with a limited content of organic explosive (not higher than 30–35%), these two compounds provide 5–10 s higher values of $$I_{ef}$$ (3) than when using HMX.

中文翻译：

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N-(2,2-双(甲氧基-NNO-偶氮氧基)乙基)硝胺的热化学和能量特性

1,1-双(甲氧基-NNO-偶氮氧基)-3-硝基-3-氮杂丁烷和1,1,8,8-四(甲氧基-NNO-偶氮氧基)-3,6-二硝基-的标准生成焓3,6-二氮杂辛烷经实验测定分别为 87.7 $$\pm$$ 3.9 和 283.8 $$\pm$$ 6.2 kJ/mol。计算表明，在基于活性粘合剂和高氯酸铵的无金属组合物中，含有这两种化合物作为气化组分的固体复合推进剂在火箭系统第三级可达到的最大有效冲量方面较差$$I_{ef}$ $ (3) 到基于 HMX 的组合物，但在设计有机炸药含量有限（不高于 30-35%）的特殊组合物时，这两种化合物提供了 5-10 秒的高 $$I_{ef}$ 值$ (3) 比使用 HMX 时。