[gmx-users] RE: mathematical expression to obtain the C6 and C12 LJ terms for the GROMOSXX ff family

2011-03-29 Thread sa
m: Mark Abraham > Subject: Re: [gmx-users] Re: mathematical expression to obtain the C6 > and C12 LJ terms for the GROMOSXX ff family > To: Discussion list for GROMACS users > Message-ID: <4d910f8e.8050...@anu.edu.au> > Content-Type: text/plain; charset="iso-885

Re: [gmx-users] Re: mathematical expression to obtain the C6 and C12 LJ terms for the GROMOSXX ff family

2011-03-28 Thread Mark Abraham
On 29/03/2011 12:17 AM, sa wrote: OK, Pr van der Spoel, So what is the correct way to obtain LJ C6 and C12 values given in the [ atomtypes ] and in the [ nonbond_types] sections of ffnonbonded.itp if I have only the sigma and epsilon values. If understand well [ atomtypes ] section giv

Re: [gmx-users] Re: mathematical expression to obtain the C6 and C12 LJ terms for the GROMOSXX ff family

2011-03-28 Thread sa
help. SA > -- > > Message: 2 > Date: Mon, 28 Mar 2011 14:13:44 +0200 > From: David van der Spoel > Subject: Re: [gmx-users] Re: mathematical expression to obtain the C6 > and C12 LJ terms for the GROMOSXX ff family > To: Discussion list for GROMACS

Re: [gmx-users] Re: mathematical expression to obtain the C6 and C12 LJ terms for the GROMOSXX ff family

2011-03-28 Thread David van der Spoel
On 2011-03-28 14.07, sa wrote: Sorry I forget to say in my previous mail that the values obtained by g_sigeps_mpi are not similar to the values given in the GROMOS53A6 ffnonbonded.itp for the OM atom. OM8 0.000 0.000 A 0.0022619536 7.4149321e-07 Difficult to compare this way

Re: [gmx-users] Re: mathematical expression to obtain the C6 and C12 LJ terms for the GROMOSXX ff family

2011-03-28 Thread Justin A. Lemkul
sa wrote: Sorry I forget to say in my previous mail that the values obtained by g_sigeps_mpi are not similar to the values given in the GROMOS53A6 ffnonbonded.itp for the OM atom. I understand that. Everything I said an hour ago (http://lists.gromacs.org/pipermail/gmx-users/2011-March/059

[gmx-users] Re: mathematical expression to obtain the C6 and C12 LJ terms for the GROMOSXX ff family

2011-03-28 Thread sa
Sorry I forget to say in my previous mail that the values obtained by g_sigeps_mpi are not similar to the values given in the GROMOS53A6 ffnonbonded.itp for the OM atom. OM8 0.000 0.000 A 0.0022619536 7.4149321e-07 So your advices are welcome. SA 2011/3/28 sa > Thank you