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[求助] HinderedRotor 频率计算需要周期性信息的问题

用高斯作过渡态受阻转动频率计算时，输入关键词为
# m052x/6-311++g(2df,2p) iop(7/33=1) opt=(calcfc,maxcycle=150,ModRedundant) Freq=HinderedRotor

title

0 3
C
H                   1    1.07746
H                   1    1.07929  2    117.55134
H                   1    1.07746  2    117.31575  3 -148.94111  0
H                   1    1.53733  2    102.41747  3    99.86409  0
O                   1    2.60696  4    104.26084  2    114.66693  0
O                   6    1.27802  1    101.64819  4    118.20845  0

输出中出现这样的错误：
rotorrotorrotorrotorrotorrotorrotorrotorrotorrotorrotor
         Hindered Internal Rotation Analysis
rotorrotorrotorrotorrotorrotorrotorrotorrotorrotorrotor
Internal coordinate list sorted
Checking for planar centers
Checking for ring deformation
The bond between atoms    1 and    5 has a periodicity between  1 and  3.
The bond between atoms    5 and    6 has a periodicity between  1 and  1.
Periodicity information is required for    2 bonds.
Please see ReadHinderedRotor in the user manual.
Error termination via Lnk1e in /public/software/g09/l716.exe at Thu May 15 21:38:30 2014.
手册中提到过渡态受阻转动计算时，此冗余内坐标的设置可以用 Geom=Modify 关键词进行修改，不明白这个该怎样设置，所谓的周期性信息如何设定。希望有经验的高手予以指点，非常感谢！

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