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superrice木蟲 (正式寫手)
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[求助]
求教某些特定軌道的電子密度差圖
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最近在學(xué)習(xí)如何計(jì)算電子密度差圖,在這篇文獻(xiàn)中遇到了一些問題J. Phys. Chem. A 2011, 115, 13811–13820。例如table1中,左上角第一張圖。這是激發(fā)態(tài)某軌道的密度差圖。這個(gè)密度差圖是否由4個(gè)密度差圖之和做出來的,如果是的話,那么系數(shù)c該怎么加進(jìn)去。我試著用gaussian view試做了一下小分子,好像不能加入貢獻(xiàn)比。然后如果用multifwn作的話,怎么做某些特定軌道的密度差圖,怎么加入里面系數(shù)的貢獻(xiàn)。非常感謝,下面是文章里系數(shù)貢獻(xiàn)的定義: The total electron density difference between the ground and the excited states Σ Fm->n is calculated by the molecular orbital electron density difference Fm->n = [(Cm->n)^2/(Σ Cm->n2)^2]*(ρn-ρm),where ρn and ρm are the electron density of the two molecular orbitals relative to the electron transition model of MO(m) -> MO(n), Cm->n is the orthogonal coefficient in the TD-DFT equation, and (Cm->n)^2/(Σ Cm->n)^2 can be considered as the contribution of this electron transition model to this absorption peak. 附件附上圖和文獻(xiàn)。[ Last edited by superrice on 2012-5-17 at 19:44 ] |
禁蟲 (文壇精英)
密度泛函·小卒
木蟲 (正式寫手)
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