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FDchem638l

新虫 (初入文坛)

[交流] 高斯报错,新手求指导 已有2人参与

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第一次发帖,新手也没有金币,只求各位能指导目前遇到的困难:
以前这个结构在同样DFT下用SDD和M062X都得到了过渡态,但是现在换混合基组就没办法得到过渡态了。不是跑错结构就是不收敛。差不多修改了20次。。。现在求各位达人帮助:以下是输入文件:
%chk=ts3.chk
%mem=4000MB
%nprocshared=4

# opt=(ts, calcfc, maxcyc=400, noeigentest, maxstep=10)
# freq scf=xqc
# rb3lyp/genecp

0 1
C                 -0.73087000    0.63445300    2.23514300
C                 -2.38762600   -1.25151100    1.53072300
C                 -1.28913500   -0.10252300    1.00528500
O                 -0.36748100   -0.76323400    0.30320200
C                 -2.94187800   -1.87313900    0.31844500
C                 -3.78663400   -1.12091000   -0.49901900
C                 -2.35168000   -3.16339800   -0.14617000
C                 -3.13033600    1.01714200   -2.14433800
C                 -2.39604900    0.19085200   -1.11654300
N                 -1.96958300    0.78258400    0.03367900
O                 -2.87984800    1.70774300    0.56808800
C                 -2.35123300    3.04005100    0.43535200
Sn                 1.48131500   -0.05541300   -0.07626700
Cl                 2.11865500   -1.02773100    2.03719400
Cl                 1.19366600   -1.43331600   -2.04793500
Cl                 0.76795900    2.25804400   -0.20708000
Cl                 3.78254900    0.50159600   -0.67668400
H                 -0.02638200   -0.08650600    2.66206100
H                 -0.12842000    1.48664300    1.88967800
H                 -1.73581000   -1.96516300    2.04430900
H                 -4.18034400   -1.58212900   -1.40195100
H                 -4.42256400   -0.35721100   -0.05969600
H                 -2.46057000   -3.92804400    0.63264900
H                 -1.27304500   -3.01822300   -0.29572300
H                 -2.80502800   -3.52821700   -1.07071400
H                 -2.41896200    1.72442500   -2.58689200
H                 -3.50361200    0.37791800   -2.94630900
H                 -3.96162400    1.57409800   -1.71055300
H                 -1.63064700   -0.47557600   -1.50590300
H                 -3.10272100    3.68468300    0.89517800
H                 -2.22659500    3.29899800   -0.62028100
H                 -1.39228100    3.13476900    0.94890700
H                 -1.42281600    0.93821800    2.99152700
H                 -3.08406000   -0.84437000    2.23427000

C O N Cl H 0
6-31+G(d,p)
****
Sn 0
SDD
****
下面是报错信息
Linear equations converged to 1.416D-10 1.416D-09 after    16 iterations.
Search did not lower the energy significantly.
No lower point found -- try reversing direction.
Search did not lower the energy significantly.
No lower point found -- switch to scaled steepest descent.
Search did not lower the energy significantly.
Scaled steepest descent with Shift=0.000 failed.
Search did not lower the energy significantly.
Scaled steepest descent with Shift=0.025 failed.
Search did not lower the energy significantly.
Scaled steepest descent with Shift=0.050 failed.
Search did not lower the energy significantly.
Scaled steepest descent with Shift=0.075 failed.
Search did not lower the energy significantly.
No lower point found -- switch to steepest descent.
Search did not lower the energy significantly.
Search did not lower the energy significantly.
Search did not lower the energy significantly.
No lower point found -- run aborted.
Error termination via Lnk1e in /home/sgl/g09/l508.exe at Sun Sep 23 08:18:07 2012.
Job cpu time:  1 days  3 hours 36 minutes 33.8 seconds.
File lengths (MBytes):  RWF=    734 Int=      0 D2E=      0 Chk=     12 Scr=      1

还望各位不吝赐教。谢谢!
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jinyanzi20

铜虫 (正式写手)

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针对L508问题,我加了关键字iop(5/13=1),并放松对称性。请教你 opt=(maxstep=10)是可有可无还是?我们不加这个
2楼2012-09-23 22:37:54
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FDchem638l

新虫 (初入文坛)

引用回帖:
2楼: Originally posted by jinyanzi20 at 2012-09-23 22:37:54
针对L508问题,我加了关键字iop(5/13=1),并放松对称性。请教你 opt=(maxstep=10)是可有可无还是?我们不加这个

我一般都加的,因为我的过渡态一般都是SCAN出来的,所以减小步长和加大圈数有利于不出现9999的错误吧。。
3楼2012-09-24 16:32:23
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不啃书的虫

铜虫 (小有名气)

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您好,请问解决了吗?我在结构优化的过程中也遇到了这个问题
4楼2022-09-18 17:22:29
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