Saddle point optimization
Is there a way to optimize to the geometry which is a minimum with respect
to all variables except two for which it should be a maximum
(ie. saddle point of order of 2). These two variables are some known Z-matrix
I've looked at saddle, ts, and ef params for opt but they don't seem to
help with this.
BTW would this be as simple as choosing "-Grad" direction for all
but these two for which it would be "+Grad" ?
PS. I'm using Gaussian 92/DFT