From owner-chemistry@ccl.net Fri Feb 17 03:53:00 2017 From: "Kaushik Hatua kaushikhatua!=!yahoo.in" To: CCL Subject: CCL: TDDFT geometry optimization Message-Id: <-52642-170217034610-19010-xBz9zx2R/HDps/BgEiTFuQ/a\server.ccl.net> X-Original-From: Kaushik Hatua Content-Type: multipart/alternative; boundary="----=_Part_1302829_1710608414.1487321160506" Date: Fri, 17 Feb 2017 08:46:00 +0000 (UTC) MIME-Version: 1.0 Sent to CCL by: Kaushik Hatua [kaushikhatua#yahoo.in] ------=_Part_1302829_1710608414.1487321160506 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Dear allI have a small querry regarding tddft geometry optimization of exci= ted state of g09.=C2=A0 1. Following keyword is used Opt TD (nstates=3D3, root=3D1) freq=3Dsavenormalmodes density=3Dcurrent So what I obtained is, optimization of first singlet excited state followed= by vibrational analysis. Right? 2. I don't run freq keyword rather save the orbital in check point file and= run another job with the excited state geometry with guess=3Dread. My point is what is the difference in this two process Sent from Yahoo Mail on Android ------=_Part_1302829_1710608414.1487321160506 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Dear all
I have a small= querry regarding tddft geometry optimization of excited state of g09. = ;

1. Following keyword is use= d

Opt TD (nstates=3D3, root= =3D1) freq=3Dsavenormalmodes density=3Dcurrent

So what I obtained is, optimization of first singlet exci= ted state followed by vibrational analysis. Right?

2. I don't run freq keyword rather save the orbital i= n check point file and run another job with the excited state geometry with= guess=3Dread.
My point is wh= at is the difference in this two process

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