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xiafuting

新虫 (小有名气)

[求助] 请教大侠们,用高斯算的,审稿人说没考虑非谐效应,该怎么考虑呢

请教大侠们,用高斯算的,审稿人说没考虑非谐效应,该怎么考虑呢?
One major concern with the results shown is that entropic contributions are evaluated with harmonic approximations (as implemented by default in the Gaussian program) which may lead to serious errors for contributions from low-frequency modes, specially in the ion-molecule reactant/product states. Anharmonic corrections should be computed at least in some cases. For the remaining cases, given that most of the conclusions/discussion are based on reported free energies, there should be caution or warning about the reliability of the reported \Delta S and the derived \Delta G.
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jjww0001

金虫 (小有名气)

可以看看这个:乙基、苯炔及卤代乙氧基反应的非谐振效应的研究
期刊网应该可以检索到的
2楼2013-01-13 10:50:22
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gmy1990

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【答案】应助回帖

感谢参与,应助指数 +1
你的分子不大的话就算个非谐振吧,对于非谐振校正十来个原子(碳、氢)的体系还是可以算的比较快而且比较准。
3楼2013-01-13 12:07:33
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