CCL: Why PES called intrinsic reaction coordinate

From: "Sayed Mes" <elsayed.elmes-x-yahoo.com>
Subject: CCL: Why PES called intrinsic reaction coordinate
Date: Thu, 21 Jul 2011 17:34:33 -0400

 Sent to CCL by: "Sayed  Mes" [elsayed.elmes^yahoo.com]
 Dear CCL List,
 Why PES called intrinsic reaction coordinate?
 Thanx
 Sayed