# POLYRATE questions

*From*: qftramos(-(at)-)usc.es (Antonio Fernandez Ramos)
*Subject*: POLYRATE questions
*Date*: Fri, 23 Dec 1994 09:55:44 +0100

Dear netters:
I am beginning to use POLYRATE in intramolecular proton
transfer in symmetric wells,i.e.,malonaldehide and similar systems.
I have decided to use a numerical surface with the POTENTIAL=unit30
option,and I have got some doubts:
-How could I extrapole the MEP after reactants or products?
-How many points are necessary to obtain right results?
-The effect of tunneling in the malonaldehyde is very important,
Do I need to use large curvature tunneling to obtain the rate constant
and evaluate the kinetic isotope effect in these molecules to obtain
good results?
-Do I need to know how large the reaction coordinate is to make these
calculations?
Thanks and best regards.
Antonio F. Ramos
e-mail:qftramos(-(at)-)usc.es