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alexwpch

木虫 (正式写手)

[交流] 【求助】Gaussian出错~求解决方法~

最后文件如下:
The electronic state of the initial guess is 1-A.
Requested convergence on RMS density matrix=1.00D-08 within 128 cycles.
Requested convergence on MAX density matrix=1.00D-06.
Requested convergence on             energy=1.00D-06.
No special actions if energy rises.
EnCoef did     4 forward-backward iterations
EnCoef did     2 forward-backward iterations
EnCoef did   100 forward-backward iterations
EnCoef did   100 forward-backward iterations
EnCoef did     4 forward-backward iterations
EnCoef did     9 forward-backward iterations
EnCoef did     2 forward-backward iterations
EnCoef did     4 forward-backward iterations
EnCoef did     2 forward-backward iterations
EnCoef did     9 forward-backward iterations
EnCoef did     6 forward-backward iterations
EnCoef did     6 forward-backward iterations
EnCoef did   100 forward-backward iterations
EnCoef did   100 forward-backward iterations
EnCoef did   100 forward-backward iterations
EnCoef did   100 forward-backward iterations
EnCoef did   100 forward-backward iterations
Restarting incremental Fock formation.
EnCoef did   100 forward-backward iterations
Matrix for removal  3 Erem= -1716.46305981554     Crem= 0.000D+00
EnCoef did     3 forward-backward iterations
Matrix for removal  4 Erem= -1747.63044995977     Crem= 0.000D+00
EnCoef did     2 forward-backward iterations
Matrix for removal  4 Erem= -1748.81967161364     Crem= 0.000D+00
EnCoef did     4 forward-backward iterations
Matrix for removal  3 Erem= -1749.18820489650     Crem= 0.000D+00
EnCoef did     4 forward-backward iterations
Matrix for removal  4 Erem= -1751.40483472813     Crem= 0.000D+00
EnCoef did   100 forward-backward iterations
Matrix for removal  4 Erem= -1752.54609712537     Crem= 0.000D+00
Matrix for removal 11 Erem= -1753.86016643702     Crem= 0.000D+00
Matrix for removal  5 Erem= -1754.07402768342     Crem= 0.000D+00
EnCoef did     2 forward-backward iterations
Matrix for removal  2 Erem= -1754.13432646484     Crem= 0.000D+00
Matrix for removal  3 Erem= -1754.63257777462     Crem= 0.000D+00
Matrix for removal  1 Erem= -1754.79784500535     Crem= 0.000D+00
Matrix for removal  2 Erem= -1755.49452604668     Crem= 0.000D+00
Matrix for removal  2 Erem= -1755.58452134308     Crem= 0.000D+00
Matrix for removal  1 Erem= -1755.60139143207     Crem= 0.000D+00
Matrix for removal  5 Erem= -1755.64364135480     Crem= 0.000D+00
Matrix for removal  1 Erem= -1755.76194806913     Crem= 0.000D+00
Matrix for removal  3 Erem= -1755.85231442950     Crem= 0.000D+00
Matrix for removal  2 Erem= -1756.12118974587     Crem= 0.000D+00
Rare condition: small coef for last iteration:  0.000D+00
Matrix for removal  1 Erem= -1756.18442980387     Crem= 0.000D+00
Restarting incremental Fock formation.
Restarting incremental Fock formation.
Restarting incremental Fock formation.
Restarting incremental Fock formation.
Restarting incremental Fock formation.
>>>>>>>>>> Convergence criterion not met.
SCF Done:  E(RB+HF-LYP) =  -1756.34603425     A.U. after  129 cycles
             Convg  =    0.3866D-05             -V/T =  2.0044
             S**2   =   0.0000
Convergence failure -- run terminated.
Error termination via Lnk1e in C:\G03W\l502.exe at Thu Jul 09 07:45:45 2009.
Job cpu time:  2 days 20 hours 15 minutes 35.0 seconds.
File lengths (MBytes):  RWF=    260 Int=      0 D2E=      0 Chk=     11 Scr=      1
————————————————————————————————————
说是不收敛,请问如何修改,谢谢
Route Section 为 B3LYP/6—311++G** opt freq
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yytsnake

至尊木虫 (职业作家)


lei0736(金币+1,VIP+0):谢谢 7-10 10:11
一般还是得靠基础知识来分析,如果可以,楼主不妨把结构粘上来大家讨论一下。
7楼2009-07-09 15:39:59
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szmeng

至尊木虫 (文坛精英)

★ ★ ★ ★ ★ ★ ★
alexwpch(金币+5,VIP+0):现在先用PM3优化了,正重新计算中,谢谢 7-9 16:31
lei0736(金币+2,VIP+0):谢谢 7-10 10:11
l502.exe 中断, 采用B3LYP/6—311++G** 优化大分子就有可能中断,建议采用小基组优化完成后,再用6—311++G** 。
3楼2009-07-09 11:06:09
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香奈儿3182

铜虫 (初入文坛)

同感

我的问题和你差不多,也是没有收敛,我用的是 B3LYP/6—31G*,也会出现这种问题,期待能有解决方法。是结构的问题吗?那高斯中有没有什么方法可以进行调整。非常感谢!
4楼2009-07-09 11:27:32
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yytsnake

至尊木虫 (职业作家)

★ ★
lei0736(金币+2,VIP+0):谢谢 7-10 10:11
回到GV中查看并调整不合理的地方然后再算。
5楼2009-07-09 15:05:38
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