Subject: Dihedral angle restoring force

From: [email-masked] (Gabriel Berriz)
Date: Mon, 29 Sep 1997 13:29:41 -0400

Dear netters:

I'm looking for computationally efficient code (or algorithm) to
compute the restoring forces (magnitudes and directions) corresponding
to a potential dependent on the dihedral angle formed by three
consecutive bonds along a chain.  The desired forces act on the four
atoms forming the three bonds.  Any pointers would be much
appreciated.  Thank you.

Gabriel Berriz
[email-masked]