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含能材料  2009 

氮杂类杯[6]芳烃与HMX分子间相互作用的理论研究

DOI: 10.3969/j.issn.1006-9941.2009.04.015

Keywords: 物理化学,氮杂杯[6]芳烃,分子间相互作用,密度泛函理论(DFT),分子间氢键

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Abstract:

用密度泛函理论(DFT)B3LYP方法,在6-31G(d)基组水平上,对四种氮杂杯[6]芳烃主体单体(Ma~Md)及其与HMX形成的四种复合体进行了几何构型优化。用自然键轨道(NBO)分析揭示了主客体相互作用的本质。经基组叠加误差(BSSE)和零点能(ZPEC)校正,对四种复合体的相互作用能进行了计算并做了比较。研究发现分子间相互作用能最大的复合物是六氮杂杯[3]-对-三芳烃[3]-2-氨基-1,3,5-三嗪与HMX所形成的复合物,最大相互作用能为-13.98kJ·mol-1;而且带有取代基的复合物的相互作用能大于没有带取代基的复合物,带有氨基取代基的复合物的相互作用能大于带有硝基取代基的复合物。

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