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fwang2011

金虫 (小有名气)

[求助] GAMESS: ERROR! THERE ARE NOT 5 OR 6 TRANS/ROT MODES

T/R=    7 EIGENVALUES=
   -0.0000000000  -0.0000000000  -0.0000000000   0.0000000000   0.0000000000
    0.0000000000   0.0000000000   0.0000000016   0.0000000408   0.0000000535
--------


THE CAUSE OF THIS IS OFTEN CORRUPTION OF THE HESSIAN
MATRIX AFTER MANY STEPS.  THE FIX MAY BE AS SIMPLE AS
RESTARTING THE COMPUTATION, OR MIGHT REQUIRE THAT YOU
CONSIDER CHANGING THE COORDINATES BEING USED.

试过了输出所建议的解决办法,但是都不奏效。请问如何解决?谢谢。
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fwang2011

金虫 (小有名气)

谢谢建议。
试了,可还是不行。
3楼2011-11-23 03:51:17
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yflchx

金虫 (正式写手)

★ ★
gmy1990(金币+2): 2011-11-22 23:07:22
调整初始构型,如果是优化过渡态的话。

仅供参考。
2楼2011-11-22 10:01:52
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fwang2011

金虫 (小有名气)

Update my problem description:
when I was running GAMESS to optimize a structure, I got the following error message after the 1st evaluation of the energy (NSERCH:   0  E=    -6040.5436348959  GRAD. MAX=  0.0062649  R.M.S.=  0.0002866
          FORCE CONSTANT MATRIX NOT UPDATED --- TAKING FIRST STEP):

*******************************************************************************

*** ERROR! THERE ARE NOT 5 OR 6 TRANS/ROT MODES NUM T/R=    7 EIGENVALUES=

......

THE CAUSE OF THIS IS OFTEN CORRUPTION OF THE HESSIAN
MATRIX AFTER MANY STEPS.  THE FIX MAY BE AS SIMPLE AS
RESTARTING THE COMPUTATION, OR MIGHT REQUIRE THAT YOU
CONSIDER CHANGING THE COORDINATES BEING USED.
EXECUTION OF GAMESS TERMINATED -ABNORMALLY- AT ......

*******************************************************************************

I have tried both "to restart the computation" and "to change the coordinates", but neither of them works.

Any suggestions? Thank you very much!

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4楼2011-11-23 06:46:53
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yflchx

金虫 (正式写手)

【答案】应助回帖

用的什么方法?

如果是DFT的话,可以考虑换MP2或者另外一种泛函看看能否优化出来。

假如可以的话,拿得到的结构作为初始猜测。
5楼2011-11-23 08:08:40
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