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磷氰同分异构化合物结构与稳定性的理论研究 被引量:8

Theoretical study on structures and stability of phosphacyanogen isomers
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摘要 采用从头算和密度泛函理论对4个线性磷氰的同分异构化合物进行了理论探讨。计算结果表明 P≡C-C≡N,无论从热力学还是动力学方面都是最稳定的,最有可能合成。它们的稳定性规律为:P≡C-C≡N>P≡C-N≡C>C≡P-C≡N>C≡P-N≡C。同时,我们还得到了各种异构体的几何参数、偶极矩和光谱数据。对这类化合物的实验室合成具有指导意义。 The structures,vibrational frequencies,infrared intersities,dipole moment and stability of all possible linear isomers of p-containing cyanogens are explored at MP2,B3LYP,and QCISD varions levels of theory.At all levels of theory,the most stable isomerwas found to be P≡C-C≡N.Our theoretical results predict that the order of stability of the phosphacyanogens is P≡C-C≡N>P≡C-N≡C>C≡P-C≡N>C≡P-N≡C.
出处 《计算机与应用化学》 CAS CSCD 北大核心 2004年第4期591-594,共4页 Computers and Applied Chemistry
基金 安徽省教育厅教学研究项目(JYXM2003175)
关键词 磷氰 从头算 密度泛函理论 cyanogen phosphacyanogen ab initio density function theory
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