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各位老师,我在对溴苯进行加电场(x方向,大小0.01 a.u.)优化时候发现,ORCA 5.0.3会给出诡异的虚频(下图);我用高斯16算,就不会这样。请各位老师给看看,我的输入文件哪里出了问题。
所有计算文件都在附件。
ORCA的输入文件:
! B3LYP D3 def2-SVP def2/J RIJCOSX opt freq tightSCF noautostart miniprint nopop
%maxcore 10000
%pal nprocs 20 end
%scf
efield 0.01,0,0
end
* xyz 0 1
C -2.50980000 1.38390000 0.00020000
C -1.74730000 0.04600000 0.00050000
C -0.20740000 0.03740000 0.00150000
C 0.57000000 1.36670000 0.00230000
C -0.19250000 2.70460000 0.00120000
C -1.73240000 2.71320000 0.00030000
Br 2.48000000 1.35620000 0.00470000
H -3.64970000 1.39020000 -0.00030000
H -2.32300000 -0.93800000 -0.00010000
H 0.35700000 -0.95310000 0.00170000
H 0.38300000 3.68860000 0.00170000
H -2.29680000 3.70360000 -0.00030000
*
高斯的输入文件
%chk=BenBr-Gau-3.chk
%mem=100GB
%nproc=20
# B3LYP/Def2SVP em=gd3bj opt freq nosymm field=x+100
BenBr-Gau-3
0 1
C -2.50980000 1.38390000 0.00020000
C -1.74730000 0.04600000 0.00050000
C -0.20740000 0.03740000 0.00150000
C 0.57000000 1.36670000 0.00230000
C -0.19250000 2.70460000 0.00120000
C -1.73240000 2.71320000 0.00030000
Br 2.48000000 1.35620000 0.00470000
H -3.64970000 1.39020000 -0.00030000
H -2.32300000 -0.93800000 -0.00010000
H 0.35700000 -0.95310000 0.00170000
H 0.38300000 3.68860000 0.00170000
H -2.29680000 3.70360000 -0.00030000
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