[gmx-users] Three-site model for acetonitrile

[Christoph Freudenberger]

christoph.freudenberger at chemie.uni-ulm.de wrote:
> Zitat von David <spoel at xray.bmc.uu.se>:
>>Probably not... The constraints (and bonds) can only exert forces along
>>the bonds, and hence it is rather ineffecient/impossible to move the
>>central carbon back on the bond once it moves off there...
> 
> Ok, I'll forget about that... 

Accually I can't really forget it... what if i used the three atoms
and constrain them with a massless interactionless dummy:
something like this:

Me--C--N
   \ | /
    \|/
     D

if the dummy has no mass, charge and vdw the nature of the molecule
should no be altered, right?

regrads
-- 
Christoph Freudenberger
Abt. Organische Chemie I AK Siehl - Uni Ulm -Tel: ++49-731-502-2785