From owner-chemistry@ccl.net Mon May 29 10:47:00 2006 From: "tarig elshaarani mohamed shaarany_11[A]yahoo.com" To: CCL Subject: CCL:G: IRC & TS CALCULATION Message-Id: <-31854-060528084843-8398-q0C9f5tn2LtoSpUI7fbvmA**server.ccl.net> X-Original-From: "tarig elshaarani mohamed" Date: Sun, 28 May 2006 08:35:45 -0400 Sent to CCL by: "tarig elshaarani mohamed" [shaarany_11|,|yahoo.com] Dear Sir/Mme: I am a gradute student from Sudan ,working on theoretical studies of Diels_Alder reaction using G03,(following the reaction using density function theory)..my problem is that; whenever i make my (input)file by Molder and (export )it to G03 to process calculations,especially when i use IRC or TS as keywords a message pop up to me reading(insert the force constant calculations) but when i respond to this by writing(calc FC ) as key word with IRC or TS, another message pop up reading (input error)..What do you suggest i should do to overcome this?...Also is there any software that can prepare the coordinates as Z matrix?.... Thank You so much Tarig Elshaarani M.Sc student University of Khartoum --