Hi! Thank you for reply. You have lost me there, tbh.
I think I didn't make it clear, I have either organic -vely changed molecule or Cl-. Those counterbalance the +vely charged material. Therefore, I either have organics or clorine. So, if I do TI and completely decouple vow and charges: couple-intramol = yes couple-lambda0 = none couple-lambda1 = vdwq but then, obviously, I run into problems when simulating charged system (i.e it crashes) so, I am thinking of running: couple-intramol = yes couple-lambda0 = none couple-lambda1 = vdw i.e. keeping the charge to balance and having total charge 0 of the simulation box. Then the plan would be: Org -ve TI -ve charge remains TI Cl -ve Material +ve ----> Material +ve -----> Material +ve Does this make sense? Or it is possible to go from Organics to Cl- directly in one integration sequence? Thank you for your advises, V -- View this message in context: http://gromacs.5086.x6.nabble.com/Free-energy-calculation-of-a-charged-system-tp5015154p5015224.html Sent from the GROMACS Users Forum mailing list archive at Nabble.com. -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.