应用电性拓扑态(E-state)指数模拟分析了硝基类含能化合物的撞击感度,采用逐步回归构建了5个变量的定量结构-性质相关模型,模型的相关系数和标准偏差分别为0.907和0.1713,交叉验证相关系数及均方根误差分别为0.941和0.1869,模型具有较高的可靠性、相关度和预测能力。模型分析表明,电性拓扑态指数与硝基类化合物的撞击感度有较好的相关性,原子的电性状态是影响撞击感度的重要因素。
The impact sensitivity of energetic nitro compounds was simulated and analyzed by means of electrotopological state (E-state) indices. A quantitative structure-property relationship (QSPR) model with 5 variables was established by using stepwise regression method. The correlation coefficient (Rmdj^2 ) and standard deviation (SD) of the model is 0.907 and 0. 171 3 respectively; cross validated coefficient ( QLOO ) is 0.941 and root mean square error (RMSE) is 0. 186 9. The model possesses better reliability, correlation degree and prediction ability. The model analysis shows that there is a better correlation between the E-state indices and the impact sensitivity of nitro compounds. The electrical state of atoms is an important influence factor of the impact sensitivity.