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PH_2和NO反应的分子轨道从头算和密度泛函理论

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摘要 用量子化学从头计算和密度泛函理论方法对PH2和NO的在基态势能面上的反应进行了研究,计算了反应中的各驻点物种的平衡构型、振动频率、总能量和零点能(ZPE).计算采用HF,MP2(full)和B3LYP理论方法以及中型基组6-31G*.内禀反应则由B3LYP/6-31G*计算获得.计算结果表明,反应首先经过一小的活化能生成中间体H2PNO,而后再克服两个均为四环结构的势垒TS2和TS5,垒高分别为103.3和102.6kJ/mol,才能完成H原子的转移和分子的异构,生成PN和H2O.整个反应为放热反应,放热为189.6kJ/mol.
出处 《中国科学(A辑)》 CSCD 北大核心 2002年第8期730-736,共7页 Science in China(Series A)
基金 国家自然科学基金资助项目(批准号:29773044)
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