Eudes Fileti wrote:
Dear Mark,
Thank you for the link. It was useful.
I have choosen the volume using the editiconf by setting
the experimental density for toluene. In fact, my potential
can be wrong.
So, I asked you if you would have a topology or an equilibrated box for the
toluene, since this could be very useful to me.
(but my text was not understandable, sorry).
Well I don't, but you can try generating an equilibrated box yourself
using some NPT after NVT, as the link suggested.
To generate a topology try the resources suggested there, or get
literature describing the force field you want to use and work by
analogy from benzene (as you did). If you follow the rules by which the
force field was developed, then by doing so you can have some confidence
of generating a reliable physical model. Even then, you won't always be
able to reproduce an experimental density, but if it's far wrong you can
use that to search for a problem in your setup.
Mark
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