Setting the Constraints

I am trying to set the constrains for my molecule. I apply the constrain for the torsional angle but this constrain is not applied to my molecule during the energy minimization procedure.

Does someone know what mught be the problem?

Best regards

Which minimization are you trying to use? I’m not 100% sure if the constraints apply to the auto-optimize tool, but they’ll certainly apply to the molecular mechanics commands in the menu.