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[求助]
gaussian 09溶劑化熒光發(fā)射的例子第4步運(yùn)行出錯(cuò)
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我在運(yùn)行高斯09的溶劑中熒光發(fā)射的例子時(shí)出錯(cuò),希望前輩們指點(diǎn)一下啊。按照http://www.gaussian.com/g_tech/g_ur/k_scrf.htm的步驟,在第4步的時(shí)候出錯(cuò),最后出現(xiàn)的信息是: Cartesian force constants read from checkpoint file: 04-ac.chk Length of force constants on CHK file is 0 NAT3TT is 231 Error termination via Lnk1e in /chimie/soft/g09/l103.exe 執(zhí)行的計(jì)算是: %chk=04-ac # B3LYP/6-31+G(d,p) TD=(Read,NStates=6,Root=1) SCRF=(Solvent=Ethanol) Geom=Modify Guess=Read Opt=RCFC Acetaldehyde: excited state opt Modify geometry to break Cs symmetry since first excited state is A" 0 1 4 1 2 3 10.0 5 1 2 7 -50.0 |
我的 |
銀蟲(chóng) (正式寫(xiě)手)
銀蟲(chóng) (正式寫(xiě)手)
銀蟲(chóng) (正式寫(xiě)手)
送鮮花一朵 |
你好,在第四步的時(shí)候你沒(méi)有破壞對(duì)稱性直接算?也就是不用例子中的Geom=Modify而還是用Geom=Check吧。另外還有一個(gè)問(wèn)題想請(qǐng)教一下,第二步計(jì)算垂直激發(fā)的目的是找出感興趣的狀態(tài),例子中感興趣的是root=1,所以在第三步TD(NStates=6,Root=1)。對(duì)于自己的體系,我想模擬用紫外最大吸收波長(zhǎng)激發(fā)的熒光光譜譜圖,那么我應(yīng)該找的是模擬的UV中最大吸收峰對(duì)應(yīng)的激發(fā)態(tài)吧,也就是振子強(qiáng)度f(wàn)最大值對(duì)應(yīng)的root?望指點(diǎn),謝謝了!! |
銀蟲(chóng) (正式寫(xiě)手)
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關(guān)于例子的step4,我跟高斯官方確認(rèn)了一下,step4應(yīng)該讀取step2的的checkpoint文件,同時(shí)去掉“=RCFC”,具體見(jiàn)郵件回復(fù): Thank you for your inquiry. "Step 4" should read the checkpoint file from "Step 2", since both of them use the linear-response approach to compute the excited state wave functions ("Step 3" follows the "StateSpecific" approach, so it is a little different). Nevertheless, the TD calculation in "Step 2" removed the force constants from the checkpoint file that came from "Step 1". In general, there would not be much harm in just removing the "RCFC" option from "Step 4" since it is a geometry optimization on the excited state but the force constants were from the ground state, and the curvature of the potential energy surfaces for the two states can be different in that region. If the force constants from the ground state are useful for your calculation on the excited state, then use a copy of "01-ac.chk" for your "Step 4" calculation instead of a copy of "02-ac.chk", in which case, you would then have to remove the "Read" option from the "TD" keyword since "01-ac.chk" does not contain transition densities. |
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