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本帖最后由 tianflame 于 2017-2-26 23:04 编辑
大家好:
我用antechamber处理以下小分子的mol2文件,见附件图片,事先在GaussView进行了rebond并保存为mol2文件:
使用的命令和输出的warning如下:
[root@localhost mol2]# antechamber -i niy.mol2 -fi mol2 -o niy.prepi -fo prepi -c bcc -at amber
Unknown bond type for BOND(C6-C7:Ar), assuming it is a single bond
Unknown bond type for BOND(C6-C8:Ar), assuming it is a single bond
Unknown bond type for BOND(C7-C9:Ar), assuming it is a single bond
Unknown bond type for BOND(C8-C10:Ar), assuming it is a single bond
Unknown bond type for BOND(C9-C11:Ar), assuming it is a single bond
Unknown bond type for BOND(C10-C11:Ar), assuming it is a single bond
Unknown bond type for BOND(N13-O14:Ar), assuming it is a single bondTotal number of electrons: 118; net charge: 0
请问为何程序无法识别出这些bond type?如何才能让程序识别?
另外得到的prepi文件为:
0 0 2
This is a remark line
molecule.res
MOL INT 0
CORRECT OMIT DU BEG
0.0000
1 DUMM DU M 0 -1 -2 0.000 .0 .0 .00000
2 DUMM DU M 1 0 -1 1.449 .0 .0 .00000
3 DUMM DU M 2 1 0 1.523 111.21 .0 .00000
4 O4 O2 M 3 2 1 1.540 111.208 -180.000 -0.750300
5 C3 C M 4 3 2 1.259 135.780 92.416 0.940600
6 O16 O2 E 5 4 3 1.259 119.968 -126.031 -0.750300
7 C2 CT M 5 4 3 1.539 119.994 53.850 -0.078500
8 N1 N3 3 7 5 4 1.470 109.499 -149.983 -0.833600
9 H17 H E 8 7 5 1.000 109.495 -179.927 0.445800
10 H18 H E 8 7 5 1.000 109.484 60.042 0.445800
11 H19 H E 8 7 5 1.000 109.478 -59.903 0.445800
12 H20 HP E 7 5 4 1.071 109.468 90.058 0.090700
13 C5 CT M 7 5 4 1.540 109.537 -29.909 -0.048100
14 H21 HC E 13 7 5 1.070 109.444 -60.013 0.098200
15 H22 HC E 13 7 5 1.071 109.461 59.938 0.098200
16 C6 CA M 13 7 5 1.539 109.500 179.997 -0.147300
17 C7 CA M 16 13 7 1.401 120.023 150.027 -0.068000
18 H23 HA E 17 16 13 1.070 120.042 -0.093 0.162000
19 C9 CA M 17 16 13 1.402 120.009 -179.995 -0.274200
20 N13 NO B 19 17 16 1.470 119.965 179.947 0.325200
21 O14 DU E 20 19 17 1.237 119.954 179.910 -0.216500
22 O15 DU E 20 19 17 1.360 120.009 -0.017 -0.216500
23 C11 CA M 19 17 16 1.400 119.996 -0.082 0.226100
24 O12 OH S 23 19 17 1.430 120.015 -179.946 -0.484100
25 H26 HO E 24 23 19 0.960 109.472 29.978 0.471000
26 C10 CA M 23 19 17 1.401 120.009 0.022 -0.171000
27 H25 HA E 26 23 19 1.070 120.016 179.975 0.173000
28 C8 CA M 26 23 19 1.401 120.019 0.029 -0.044000
29 H24 HA E 28 26 23 1.069 120.035 179.995 0.163000
LOOP
C8 C6
IMPROPER
C2 O4 C3 O16
C7 C8 C6 C5
C6 C9 C7 H23
C7 C11 C9 N13
C9 O14 N13 O15
C9 C10 C11 O12
C11 C8 C10 H25
C6 C10 C8 H24
DONE
STOP
好像硝基的两个氧原子没有指定好:
21 O14 DU E 20 19 17 1.237 119.954 179.910 -0.216500
22 O15 DU E 20 19 17 1.360 120.009 -0.017 -0.216500
请问我可以手动修改吗?如何修改?GAFF原子类型中氧有以下几种:
o : Oxygen with one connected atom
oh : Oxygen in hydroxyl group
os : Ether and ester oxygen
ow : Oxygen in water
请问第一种合适吗?硝基中的氧应该是哪一种呢?
另外我看prepi文件中指定的原子类型都是大写,而GAFF原子类型却是小写,请问二者有区别吗,是如何联系统一在一起的?
问题比较初级,请见谅,谢谢!
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