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xuelucheng

银虫 (初入文坛)

[求助] 关于CASTEP计算气体在金属氧化物表面的吸附,搜索过渡态时出错,求高人指点

错误信息如下


Final energy =  -16807.27086398     eV
(energy not corrected for finite basis set)

+++++++++++++++++++++++++++++++++++++++++++++++++++++++
Path coordinate:                         0.00000
Energy:                             -16807.27086 eV                           
+++++++++++++++++++++++++++++++++++++++++++++++++++++++

+++++++++++++++++++++++++++++++++++++++++++++++++++++++
Unable to bracket maximum from both endpoints
Please check endpoints
Cumulative number of energy/gradient calls:     18
+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Error detected in tssearch_algor_LST
Current trace stack:
tssearch_utils_io_abort
tssearch_algor_LST
tssearch_LSTQST
tssearch_run
castep
Trapped SIGINT or SIGTERM. Exiting...
Trapped SIGINT or SIGTERM. Exiting...
Trapped SIGINT or SIGTERM. Exiting...
Trapped SIGINT or SIGTERM. Exiting...
Trapped SIGINT or SIGTERM. Exiting...
Trapped SIGINT or SIGTERM. Exiting...
Trapped SIGINT or SIGTERM. Exiting...
Trapped SIGINT or SIGTERM. Exiting...
Trapped SIGINT or SIGTERM. Exiting...
Trapped SIGINT or SIGTERM. Exiting...
Trapped SIGINT or SIGTERM. Exiting...
MPI Application rank 0 exited before MPI_Finalize() with status 1
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chimegreen

木虫 (正式写手)

Dr.

【答案】应助回帖


liliangfang: 金币+1, 谢谢交流 2013-11-17 16:06:47
most likely DMol3 does not find a barrier between your reactants and products.
it looks very much like DMol is having trouble finding an initial guess for the transition state. As Victor mentioned, it would be difficult to determine exactly what is happening without access to the files. However, it would probably be worthwhile checking in the Material Studio manual - particularly about the keyword 'opt_ts_bracket', which could probably help you further.
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2楼2013-11-17 12:02:40
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chimegreen

木虫 (正式写手)

Dr.

【答案】应助回帖

出现这个问题,一般还是因为末态的product构型的问题
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3楼2013-11-17 12:21:19
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