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gauss98

禁虫 (正式写手)

【答案】应助回帖

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感谢参与,应助指数 +1
renren123123: 回帖置顶 2012-11-27 23:12:43
cenwanglai: 金币+5, QC强帖+1, 感谢热心回帖~ 2012-11-28 10:21:31
你原来的结构两个碳原子离得太近了。拉远一点形成一个接近正方形就可以了

我给你调整的初始坐标输入文件:
% nproc=8
# opt freq b3lyp/6-31++g(2d,2p) nosymm geom=connectivity

A3

1 1
C                 -1.13450913   -0.01127887   -0.00000220
C                  0.95631432    0.02923363    0.00005361
N                 -0.03836219    1.04174624    0.00003058
N                 -0.08521300   -1.08127400   -0.00003000
N                 -2.42041013    0.06481113   -0.00010520
H                 -2.98471313   -0.77609087    0.00033380
H                 -2.87481813    0.96801713   -0.00019720

1 3 1.0 4 1.5 5 2.0
2 3 2.0 4 1.5
3
4
5 6 1.0 7 1.0
6
7



优化结束后的结果算频率的坐标:
C,0,-1.0994478143,0.0776653719,-0.1739757193
C,0,0.7433080732,-0.0902050705,0.5030218806
N,0,-0.0435391597,0.9003683894,-0.3201383759
N,0,-0.0614862126,-0.8627745918,-0.2995524251
N,0,-2.3634015779,0.0714470718,0.0499234862
H,0,-2.8801374252,-0.8041990431,0.0808993623
H,0,-2.8770072735,0.9428622623,0.1599051813


注意结果是个局部能量极小点,能量很高,比线性构型能量高很多!

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3楼2012-11-27 11:02:53
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