From: Josh Vermaas (
Date: Sun Apr 14 2013 - 17:38:37 CDT

Knowing absolutely nothing about what CNT is, and seeing that you are
using topotools, couldn't you just add them in manually? topo
addimproper is a command that exists, and would add impropers if you
should desire them.

On 04/14/2013 04:30 PM, Anurag Sharma wrote:
> Hi,
> I have build a CNT using VMD. I am able to construct psf file using topo tools which has bonds, angles and dihedrals. But I am getting 0 impropers every time. Can somebody tell me how to deal with this problem.
> Thank you
> Anurag Sharma