CCL:G: implicit solvation



 Sent to CCL by: Arne Dieckmann [adieckma ~ googlemail.com]
 Dear Dave,
 I am aware of that. However, as I understand it frequency calculations should be
 done in vacuum as the equations are derived from an ideal gas assumption. Am I
 wrong here? And what would be the energy I need to use from the PCM calculation?
 Cheers,
 Arne
 On Apr 28, 2011, at 17:01, "Close, David M. CLOSED^mail.etsu.edu"
 <owner-chemistry=-=ccl.net> wrote:
 >
 > Sent to CCL by: "Close, David M." [CLOSED++mail.etsu.edu]
 > Arne:
 >  You need to do a frequency calculation and then you will have all the
 thermodynamic parameters including the free energy, the zero-point energy, etc.
 >  Regards, Dave Close
 >
 > -----Original Message-----
 >> From: owner-chemistry+closed==etsu.edu(!)ccl.net [mailto:owner-chemistry+closed==etsu.edu(!)ccl.net] On Behalf Of Arne
 Dieckmann adieckma]_[googlemail.com
 > Sent: Thursday, April 28, 2011 8:53 AM
 > To: Close, David M.
 > Subject: CCL:G: implicit solvation
 >
 >
 > Sent to CCL by: "Arne Dieckmann" [adieckma---googlemail.com]
 > Dear all,
 >
 > I am performing Gaussian calculations using implicit solvation (CPCM).
 Afterwards, I would like to apply thermal corrections from gas phase
 calculations to obtain free energy differences of certain molecules. The
 Gaussian output contains several energy values when using implicit solvation,
 e.g. "After PCM corrections, the SCF energy is  -193.093761350" and
 "Total free energy in solution with all non electrostatic terms".
 Which one would I use to add the correction for free energy?
 >
 >
 > Thanks in advance,
 > Arnehttp://www.ccl.net/cgi-bin/ccl/send_ccl_messagehttp-:-//www.ccl.net/chemistry/sub_unsub.shtmlhttp-:-//www.ccl.net/spammers.txt>;
 >