Re: [gmx-users] weird problem on small molecules with triple bonds

2007-10-16 Thread David Mobley
David and all, > Sorry, my brain was on vacation (about the N). Anyway, having C2 as VS > would mean the molecule remains perfectly linear as it should be, and > you do not have to define angles of 180 degrees which gives you an > ill-defined force. Isn't there a robust implementation that wouldn

Re: [gmx-users] weird problem on small molecules with triple bonds

2007-10-16 Thread David van der Spoel
David Mobley wrote: David, On 10/16/07, David van der Spoel <[EMAIL PROTECTED]> wrote: David Mobley wrote: All, I may be in a hole of my own digging, here, but I've been trying to simulate a large set of small molecules in explicit solvent. I'm using the Amber GAFF parameters, converted over

Re: [gmx-users] weird problem on small molecules with triple bonds

2007-10-16 Thread David Mobley
David, On 10/16/07, David van der Spoel <[EMAIL PROTECTED]> wrote: > David Mobley wrote: > > All, > > > > I may be in a hole of my own digging, here, but I've been trying to > > simulate a large set of small molecules in explicit solvent. I'm using > > the Amber GAFF parameters, converted over to

Re: [gmx-users] weird problem on small molecules with triple bonds

2007-10-16 Thread David van der Spoel
David Mobley wrote: All, I may be in a hole of my own digging, here, but I've been trying to simulate a large set of small molecules in explicit solvent. I'm using the Amber GAFF parameters, converted over to GROMACS using our amb2gmx.pl script. The problem I'm running into is that for anything

[gmx-users] weird problem on small molecules with triple bonds

2007-10-16 Thread David Mobley
All, I may be in a hole of my own digging, here, but I've been trying to simulate a large set of small molecules in explicit solvent. I'm using the Amber GAFF parameters, converted over to GROMACS using our amb2gmx.pl script. The problem I'm running into is that for anything with a triple bond (i