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joyce_smile

铜虫 (小有名气)

[交流] 【求助】关于l502错误

请问大家:
我用cis方法算一个分子的激发态,
Route Section: #p UCIS(Root=2,Read)/6-31+G(D) Guess=Read Opt  scf=(maxcycle=500) Freq Geom=AllCheck
我的分子没有对称性,scf不收敛,不是scf的循环次数不够,最后几行是这样的:
Cycle  10  Pass 1  IDiag  1:
RMSU=  9.92D-08    CP:  1.00D+00  1.15D+00  1.31D+00  1.45D+00  2.36D+00
                    CP:  3.00D+00  2.72D+00  2.10D+00  2.08D+00
E= -347.467168957094     Delta-E=       -0.000000003308 Rises=F Damp=F
DIIS: error= 4.85D-06 at cycle  10 NSaved=  10.
NSaved=10 IEnMin=10 EnMin= -347.467168957094     IErMin= 8 ErrMin= 4.78D-06
ErrMax= 4.85D-06 EMaxC= 1.00D-01 BMatC= 1.77D-09 BMatP= 1.77D-09
IDIUse=1 WtCom= 1.00D+00 WtEn= 0.00D+00
Coeff-Com: -0.325D-03 0.221D-02-0.119D-01-0.141D-01 0.906D-01-0.791D-02
Coeff-Com: -0.189D+00-0.141D-01 0.118D+01-0.381D-01
Coeff:     -0.325D-03 0.221D-02-0.119D-01-0.141D-01 0.906D-01-0.791D-02
Coeff:     -0.189D+00-0.141D-01 0.118D+01-0.381D-01
Gap=     0.498 Goal=   None    Shift=    0.000
Gap=     0.481 Goal=   None    Shift=    0.000
RMSDP=8.76D-09 MaxDP=7.18D-07 DE=-3.31D-09 OVMax= 1.32D-06

Density matrix is not changing but DIIS error= 4.85D-06 CofLast=-3.81D-02.
The SCF is confused.
Error termination via Lnk1e in /usr/local/Gaussian_D2/g03/l502.exe at Tue Apr 20 00:27:46 2010.
请问这是怎么回事?我可以怎么办呢?
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