Subject: Torsion constraint in MOPAC 6.0

From: [email-masked] (Tamaki Kurusu)
Date: Wed, 20 Sep 1995 15:05:44 +0600

Hi, all!

I have a question about the ways to constrain a torsion angle in
MOPAC 6.0 run.  (We use SGI Iris Workstation.)

I set the optimization flag for the particular torsion angle to 0 so
that it would not be optimized during the run, but that torsion was
actually optimized/changed.

What is the right method to constrain a torsion/angle/bond length
in MOPAC?

Thank you for your help in advance!

tamaki