From owner-chemistry@ccl.net Wed Mar 21 01:19:01 2012 From: "partha kundu partha1kundu-$-gmail.com" To: CCL Subject: CCL: TDDFT calculation Message-Id: <-46535-120321011603-25810-uohzEWuFj72l/wF/S18Cjw^^server.ccl.net> X-Original-From: partha kundu Content-Type: text/plain; charset=ISO-8859-1 Date: Wed, 21 Mar 2012 10:45:16 +0530 MIME-Version: 1.0 Sent to CCL by: partha kundu [partha1kundu=-=gmail.com] Dear All, I am interested in doing exited state calculation for my molecule using TDDFT method. I have some questions regarding this. In ground state calculation, we optimize a structure using lower basis set and use it as a intial structure for the next level.Is it also possible to do for exited state? Is there any other concern in optimizing the higher excited state? I know that at higher excited state since the energy levels are closer, a wrong optimization may lead to different exited state. How to check it and solve?Any other advice is greatly appreciated. Thanks. Partha