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[求助]
MP2水平優(yōu)化結構不收斂,請問怎么辦?
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我先采用b3lyp對該金屬氧化物進行結構優(yōu)化,能夠收斂,然后用收斂的結構繼續(xù)用mp2水平優(yōu)化結構,結果不收斂。請問是什么原因?該如何處理? %mem=500MW # opt mp2/genecp metal oxide opt 0 1 O 1.41483100 -1.41388800 -1.14021600 O -1.41463800 -1.41417600 1.13998200 O 1.41329500 1.41441300 1.14097000 O -1.41370400 1.41368900 -1.14115000 O -1.41441500 1.41369800 1.14071100 O 1.41379400 1.41428500 -1.14088500 O -1.41308100 -1.41384100 -1.14187400 O 1.41347500 -1.41382100 1.14163900 Cu 0.00071900 -0.00007300 -1.28444500 Cu -0.00049100 -0.00010600 1.28480000 C 1.79520500 -1.79461800 0.00092400 C -1.79512000 1.79442800 -0.00036800 C 1.79457800 1.79511600 0.00017300 C -1.79503700 -1.79463900 -0.00119500 H -2.57478900 2.57336900 -0.00062600 H 2.57414700 2.57415500 0.00021300 H -2.57498000 -2.57330200 -0.00190700 H 2.57480800 -2.57362000 0.00137900 C H O 0 6-31+G(d,p) **** Cu 0 LANL2DZ **** Cu 0 LANL2DZ 出錯信息如下: Restarting incremental Fock formation. Rare condition: small coef for last iteration: 0.000D+00 Rare condition: small coef for last iteration: 0.000D+00 Rare condition: small coef for last iteration: 0.000D+00 Rare condition: small coef for last iteration: 0.000D+00 Rare condition: small coef for last iteration: 0.000D+00 Rare condition: small coef for last iteration: 0.000D+00 Rare condition: small coef for last iteration: 0.000D+00 Rare condition: small coef for last iteration: 0.000D+00 Rare condition: small coef for last iteration: 0.000D+00 Rare condition: small coef for last iteration: 0.000D+00 Rare condition: small coef for last iteration: 0.000D+00 EnCoef did 100 forward-backward iterations >>>>>>>>>> Convergence criterion not met. SCF Done: E(RHF) = -1142.63031307 A.U. after 129 cycles Convg = 0.8451D-03 -V/T = 2.1348 Convergence failure -- run terminated. Error termination via Lnk1e in /home/apps/g09/l502.exe at Wed Jun 11 15:05:32 2014. Job cpu time: 0 days 1 hours 57 minutes 20.9 seconds. File lengths (MBytes): RWF= 15408 Int= 0 D2E= 0 Chk= 7 Scr= 1 |


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