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henuhaog

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[交流] 【求助】计算时分子结构被破坏 已有5人参与

I want to optimize the geometry  of Dithiobis succinimidyl propionate (DTSP) with B3LYP.
I used Gaussianview to construct DTSP without any restriction. However, the C-O bond broke and two head groups(C4H4NO3-, ) came together during optimization. The structure is totally changed. At last, the calculation died at link 9999. What should I do if I want to avoid this?
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cailianguo

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我也碰到这样的问题,不知道怎么弄的
蔡老师化工模拟aspenplus裙283978852
2楼2010-07-28 09:27:09
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erylingjet

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结构不合适?
3楼2010-07-28 09:36:09
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springxa

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是否有减少优化步长的参数,可以试试
4楼2010-07-28 10:17:45
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半支烟5591

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The initial structure is not reasonable or it is completely wrong,
5楼2010-07-29 13:33:28
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jiewei

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There are some mistakes for many people  that they constructed initial molecule geometry wihtout  checking the rationality which results the wrong phenomena as LZ
我想做个科学家,可我又喜欢写诗;我想做一个诗人,可我却读的理工科..
6楼2010-07-30 12:07:18
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