Here are some more details: My cg minimized structure has a distance of 0.3 Angstroms between Ag and another atom of another molecule. Changing all my Ag to hydrogens and running a cg still gives a distance of 0.3 Angstroms.
I could also add that each Ag belongs to its own charge group, so they should be "felt". I've tried starting with a different geometry as well with similar results. Files were modified as follows: ffoplsaa.atp I added Silver as: AG 107.87 ffoplsaanb.itp I've added: AG AG 47 107.8700 0.000 A 2.80455e-01 1.73304e-01 Chris Rowan _______________________________________________ gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/search before posting! Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. Can't post? Read http://www.gromacs.org/mailing_lists/users.php