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huakai8710

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[交流] 【求助】请问有人晓得用ms中的DMOL3怎么算频率吗? 已有1人参与

请问有人晓得用ms中的DMOL3怎么算频率吗?

我把输出的.xsd文件转为.mol输入文件,然后用DMOL3的TS optimization优化,它就出现下面的警示窗口:

In order to perform this calculation, a Hessian matrix must be present in the model.
A Hessian matrix can be generated by running a frequency calculation on the model.
Alternatively, a valid Hessian matrix can be imported.
Once a Hessian is present, a normal mode should then be selected.

请问这是怎么回事?
该怎么办?
谢谢~

[ Last edited by huakai8710 on 2010-10-6 at 20:35 ]
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