From: Ali Alizadeh (
Date: Tue Aug 12 2014 - 16:31:15 CDT

Dear Axel,
I have a problem with writing improper dihedrals in lammps data file by
topotools. How can I write improper dihedrals? I want to keep the planar
shape of one part of molecule. I have a force field which defines such this
improper dihedrals.

Ali Alizadeh