Hi,
I am looking to specify my own parameters for LJ parameters. Using the OPLS
forcefield, I only want to change the LJ parameters of some atoms.
I have H2O, C8H16O2 (Octanoic acid) and C2H6O (Ethanol).
I am using SPC/E for H2O, and OPLS for C8H16O2 and C2H6O. And I want to
change the LJ parameters for the hydrogens in C8H16O2 only.
I have tried specifying [ atomtypes ] in various places (In .top or .itp)
using the following format:
[ atomtypes ]
H H 1.008 0.450 A 5.66387665E-4
2.80730518E-7
But I was not successful; I checked topol.tpr and the numbers are according
to OPLS and not my specified values.
Can someone give me advice on how to do this? I've checked the forums and I
was not successful at finding the correct information.
Best Regards,
Dan
--
Dan Gil
Case Western Reserve University | Class of 2016
Researcher, Department of Chemical Engineering
ps...@case.edu
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