Hello Mark thanks for the comments, In fact, what I did was insert the parameters into ffbonded.itp file. What I presented the link above is just the part that I had added (of course there is the line 1495, not shown!).
The installation where I started making the change is new, I have not changed anything, just added the lines for the parameters mentioned. Nevertheless, you think I need to re-install the gromacs? Bests eef _______________________________________ Eudes Eterno Fileti Centro de Ciências Naturais e Humanas Universidade Federal do ABC — CCNH Av. dos Estados, 5001 Santo André - SP - Brasil CEP 09210-971 +55.11.4996-0196 http://fileti.ufabc.edu.br
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