From owner-chemistry@ccl.net Sun Apr 24 19:12:00 2011 From: "Sidi Mohamed Mekelleche sidi_mekelleche]*[hotmail.fr" To: CCL Subject: CCL:G: CCL RMS curve Message-Id: <-44458-110424135636-7057-NM+zviJIZc73rzhPZw5xfg!^!server.ccl.net> X-Original-From: "Sidi Mohamed Mekelleche" Date: Sun, 24 Apr 2011 13:56:35 -0400 Sent to CCL by: "Sidi Mohamed Mekelleche" [sidi_mekelleche**hotmail.fr] Dear CCLers, In addition of the curve E=f(IRC reaction coordiante), the curve RMS= f(IRC reaction coordiante) is very important to deduce the nature (one-stage conceretd vs. conceted two-stage) of the mechanism of the bond-formation process of the two sigma bonds in a Diels-Alder or 1,3 cycloaddition reaction. My question is "What is the significance of the gaussian shape of the combinaison of two guassian shapes of the curve RMS=f(IRC coordiante)" ? Sincerely, From owner-chemistry@ccl.net Sun Apr 24 19:48:01 2011 From: "Sidi Mohamed Mekelleche sidi_mekelleche++hotmail.fr" To: CCL Subject: CCL:G: RMS curve Message-Id: <-44459-110424135400-28072-0iJJwONwauzqU8L0Cs57tw*server.ccl.net> X-Original-From: "Sidi Mohamed Mekelleche" Date: Sun, 24 Apr 2011 13:53:58 -0400 Sent to CCL by: "Sidi Mohamed Mekelleche" [sidi_mekelleche-$-hotmail.fr] Dear CCLers, In addition of the curve E=f(IRC reaction coordiante), the curve RMS= f(IRC reaction coordiante) is very important to deduce the nature (one-stage conceretd vs. conceted two-stage) of the mechanism of the bond-formation process of the two sigma bonds in a Diels-Alder or 1,3 cycloaddition reaction. My question is "What is the significance of the gaussian shape of the combinaison of two guassian shapes of the curve RMS=f(IRC coordiante)" ? Sincerely,