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mojie1987銅蟲 (小有名氣)
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[交流]
【求助】如何計算線性分子的Renner-Teller效應(yīng) 已有4人參與
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| 在進行激發(fā)態(tài)計算的時候,Renner-Teller效應(yīng)會對所計算的分子有較大的影響,想請教各位,把RT效應(yīng)考慮進去,該怎樣計算呢?如果能有例子更好啦。。謝謝啦~~~ |
榮譽版主 (文學泰斗)
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根據(jù)Renner-Teller效應(yīng)的定義,首先你研究的這個態(tài)(通常關(guān)心的是基態(tài),但也可以是激發(fā)態(tài))必須是線形構(gòu)型下的簡并態(tài)(Pi,Delta,Phi,...),并且不是穩(wěn)定結(jié)構(gòu),會變彎曲(但是,如果變彎是由不同電子態(tài)的避免交叉導致的,不叫Renner-Teller效應(yīng),是Pseudo Jahn-Teller效應(yīng))。改變角度掃描出勢能曲線,就是定性結(jié)果。 如果定量研究Renner-Teller效應(yīng),還需要建立振動矩陣,利用從頭算數(shù)據(jù)把各種參數(shù)擬合出來。可以看這本書:I. B. Bersuker, The Jahn-Teller Effect; Cambridge University Press, 2006. 或者去J Chem Phys上找計算Renner-Teller效應(yīng)的文獻。 Renner-Teller effect in linear tetra-atomic molecules. I. Variational method including couplings between all degrees of freedom on six-dimensional potential energy surfaces. The Journal of chemical physics 雜志 再提供一個很好的資源 第三屆全國計算原子與分子物理學術(shù)會議論文集 ldecdict5@sina.com 123456 [ Last edited by ben_ladeng on 2011-1-24 at 17:53 ] |

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木蟲 (著名寫手)
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Hi: The password and username of your email box have been invalid. Can you please give me a new one? By the way, from my understanding, the particles will always bend as you cannot "freeze" the particles. The R-T effect comes when there is a coupling between vibrational wave function and the electronic wave function. And such a coupling will split the degeneracy of electronic states when you bend the particle. My question is do you get the Hamiltonian of R-T effect. I don't understand it. Here is the paper I found, which might be useful: http://www.gaoyang168.com/bbs/viewthread.php?tid=5040317 |

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