Connectivity table

Hey everyone!
I’m using Avogadro for building Gaussian Input Files. However, I have not yet found a way to obtain a connectivity table as it is required for geometry optimisations under “geom=connectivity”, in order to prevent bond dissociation. Can anyone help me who might have had the same trouble? Would be annoying writing this table anytime by hand…

Best,

Lukas

1 Like

Thanks for the message - we don’t currently support geom=connectivity.

I can probably add this to the Avo2 Gaussian script fairly easily, although since I don’t use Gaussian anymore, it would help to have an example.

This would be amazing. Do you know when it would be released? I am searching for a quite fast solution…Btw: I am using Avogadro on Mac. Don’t know whether this makes a difference in any way. Please find an example input below, the lower table is the corresponding connectivity table:

#n B3LYP/6-31G(d) Opt geom=connectivity

Avogadro_exp

0 1
C 1.71843 -2.01080 0.49606
C 0.53954 -2.70258 1.16776
C -0.55890 -1.73938 1.60234
H 2.13761 -1.29863 1.24132
H 0.13478 -3.51941 0.54179
H 2.49448 -2.78571 0.30588
H 0.91862 -3.19156 2.09129
H -1.29521 -2.36848 2.15714
H -0.11303 -1.01849 2.32446
C 0.73510 -2.20771 -1.74672
H 0.92623 -3.27758 -1.51041
H 1.16387 -2.06167 -2.76304
C -0.78840 -1.92127 -1.84622
H -0.89982 -0.95306 -2.34745
H -1.21511 -2.65121 -2.56836
N 1.37893 -1.30420 -0.76989
N -1.24420 -0.97661 0.52275
C 2.59403 -0.58348 -1.22306
H 2.48424 -0.22406 -2.26792
H 3.48627 -1.25187 -1.19212
C 2.78827 0.65102 -0.34295
C 4.02731 1.28462 -0.20083
C 1.73447 2.30285 1.02611
C 4.10791 2.44333 0.57941
H 4.91071 0.89623 -0.69352
C 2.95942 2.95741 1.19660
H 0.82805 2.70662 1.45463
H 5.05681 2.95289 0.69118
H 3.01611 3.86748 1.77873
N 1.68919 1.17350 0.27750
C -1.70078 -1.90701 -0.56782
H -1.86582 -2.93739 -0.18868
H -2.69342 -1.60194 -0.95831
C -2.38738 -0.32507 1.24216
Cu 0.17866 0.14284 -0.34316
N -0.40758 1.25012 -1.87248
N 0.14041 2.31860 -2.04211
N 0.69651 3.39517 -2.21367
C -3.22817 0.68268 0.47546
H -2.00984 0.22401 2.13573
H -3.09601 -1.10940 1.60537
H -2.61309 1.53146 0.12184
H -3.98887 1.07953 1.19020
H -3.78516 0.20483 -0.35125

1 6 1.0 4 1.0 2 1.0 16 1.0
2 5 1.0 7 1.0 3 1.0 1 1.0
3 2 1.0 8 1.0 9 1.0 17 1.0
4 1 1.0
5 2 1.0
6 1 1.0
7 2 1.0
8 3 1.0
9 3 1.0
10 12 1.0 11 1.0 13 1.0 16 1.0
11 10 1.0
12 10 1.0
13 10 1.0 14 1.0 15 1.0 31 1.0
14 13 1.0
15 13 1.0
16 35 1.0 18 1.0 10 1.0 1 1.0
17 35 1.0 34 1.0 3 1.0 31 1.0
18 16 1.0 19 1.0 20 1.0 21 1.0
19 18 1.0
20 18 1.0
21 22 1.5 30 1.5 18 1.0
22 21 1.5 24 1.5 25 1.0
23 30 1.5 26 1.5 27 1.0
24 26 1.5 22 1.5 28 1.0
25 22 1.0
26 23 1.5 24 1.5 29 1.0
27 23 1.0
28 24 1.0
29 26 1.0
30 23 1.5 21 1.5
31 33 1.0 32 1.0 17 1.0 13 1.0
32 31 1.0
33 31 1.0
34 17 1.0 39 1.0 40 1.0 41 1.0
35 16 1.0 17 1.0 36 1.0
36 35 1.0 37 2.0
37 38 2.0 36 2.0
38 37 2.0
39 34 1.0 43 1.0 43 1.0 44 1.0
40 34 1.0
41 34 1.0
42 39 1.0
43 39 1.0
44 39 1.0

Best,

Lukas

Thanks - I’ll take a look at this. It doesn’t matter about the platform - the new input generators in Avo2 are written in Python, so it runs the same on everything.

Is this option already available?