| 5 | 1/1 | 返回列表 |
| 查看: 1684 | 回復(fù): 11 | |||
| 當(dāng)前只顯示滿足指定條件的回帖,點擊這里查看本話題的所有回帖 | |||
linyanglin木蟲 (著名寫手)
|
[求助]
請問有人知道怎樣計算配合物基態(tài)的氧化電勢,急用!如果解決了再送50金幣
|
||
|
The rigorous way to obtain the GSOP (also termed ΔGox) is to compute the free energy difference between the neutral and the oxidized GS species, (G0 - G+)GS.16 The Gibbs free energy in solution of a species i (Gsolv) is defined as Gsolv=Gvac+ ΔGsolv, where Gvac is the Gibbs free energy in gas phase and ΔGsolv is the free energy of solvation. Gvac is obtained by performing a singlepoint calculation at the optimized geometry in vacuo, followed by frequency calculations in order to include the vibrational contribution to the total partition function. ΔGsolv i is obtained by a single-point calculation in solution and a reference calculation in gas phase at the geometry optimized in solution.Geometry optimizations of the neutral and oxidized sensitizers were carried out in gas phase and in acetonitrile, that is the solvent experimentally employed for the electrochemical measures, by using the B3LYP exchange-correlation functional and a 6-31G* basis set. Solvation effects were taken into account by means of the C-PCM solvation model as implemented in Gaussian 03 (G03). We employ the UAHF radii, expressly optimized to reproduce the experimental solvation energy of a series of organic molecules. For the calculation of ΔGox we adopted a 6-31+G* basis set, which includes both diffuse and polarization functions, since in preliminary calculations we found a sizable effect (+0.2-0.3 eV) of the diffuse functions on the computed ΔGox. We tested the performance of different GGA, hybrid GGA and meta-hybrid GGA functionals, also combining different exchange and correlation parts, in order to elucidate the combined effect on the computed ΔGox of the local and nonlocal HF exchange as well as of the correlation functional. 每個吉布斯自由能是如何得到的,輸入文件的關(guān)鍵詞應(yīng)該怎樣設(shè)置呢,謝謝。 [ Last edited by linyanglin on 2011-6-10 at 20:11 ] |
金蟲 (小有名氣)
|
如果用g09的話,應(yīng)該是#p b3lyp/lanl2dz opt freq scrf=(solvent=Ethanol) 這里有一點疑問,樓主的計算體系里都有些什么元素,如果全部用Lanl2dz不一定合理。 另外如果要計算氧化態(tài)的絡(luò)合物的話,樓主只需要改變計算輸入文件中的電荷和自旋多重度就可以了。這兩個參數(shù)到底是多少就取決于氧化態(tài)絡(luò)合物整體的帶電量和未成對電子數(shù)的多少了。 |
榮譽版主 (著名寫手)
木蟲 (著名寫手)
榮譽版主 (著名寫手)
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 求調(diào)劑,一志愿 南京航空航天大學(xué) ,080500材料科學(xué)與工程學(xué)碩,總分289分 +11 | @taotao 2026-03-29 | 11/550 |
|
|---|---|---|---|---|
|
[考研] 一志愿上海海洋大學(xué)083200食品學(xué)碩,求調(diào)劑,接受其他專業(yè) +5 | what張 2026-04-01 | 5/250 |
|
|
[考研] 286求調(diào)劑 +5 | Sa67890. 2026-04-01 | 7/350 |
|
|
[考研] 調(diào)劑 +5 | 好好讀書。 2026-03-28 | 7/350 |
|
|
[考研] 318一志愿吉林大學(xué)生物與醫(yī)藥 求調(diào)劑 +6 | 篤行致遠(yuǎn). 2026-03-28 | 6/300 |
|
|
[考研] 求調(diào)劑,一志愿北林食品與營養(yǎng)095500,301分,已過六級,有科研經(jīng)歷 +4 | 快樂儲蓄罐 2026-03-31 | 4/200 |
|
|
[考研] 0856調(diào)劑 +7 | 曲聽筠 2026-03-30 | 7/350 |
|
|
[考研] 調(diào)劑申請 +8 | 張張張張zy 2026-03-31 | 9/450 |
|
|
[考研] 070300化學(xué)專業(yè)279調(diào)劑 +10 | 哈哈哈^_^ 2026-03-31 | 10/500 |
|
|
[考研] 一志愿華東師范大學(xué)有機化學(xué)專業(yè),初試351分,復(fù)試被刷求調(diào)劑! +9 | 真名有冰 2026-03-29 | 10/500 |
|
|
[考研] 336材料求調(diào)劑 +10 | 陳瀅瑩 2026-03-26 | 12/600 |
|
|
[考研] 080500-315分復(fù)試調(diào)劑 +9 | 上岸3821 2026-03-31 | 9/450 |
|
|
[考研] 求化學(xué)調(diào)劑 +12 | wulanna 2026-03-28 | 12/600 |
|
|
[考研] 材料工程專碩求調(diào)劑 +10 | hyl3153942 2026-03-29 | 10/500 |
|
|
[考研] 262求調(diào)劑 +7 | ZZ..000 2026-03-30 | 8/400 |
|
|
[考研] 調(diào)劑 +4 | GK72 2026-03-30 | 4/200 |
|
|
[考研] 材料專碩 085600求調(diào)劑 +7 | BBQ233 2026-03-30 | 7/350 |
|
|
[考研] 340求調(diào)劑 +5 | jhx777 2026-03-27 | 5/250 |
|
|
[考研] 復(fù)試調(diào)劑,一志愿南農(nóng)083200食品科學(xué)與工程 +5 | XQTJZ 2026-03-26 | 5/250 |
|
|
[考研] 315調(diào)劑 +4 | 0860求調(diào)劑 2026-03-26 | 5/250 |
|