CCL:G: Gaussian command and second derivatives

From: Rene Sitt <Sitt^students.uni-marburg.de>
Subject: CCL:G: Gaussian command and second derivatives
Date: Wed, 18 Mar 2015 15:32:39 +0100

 Sent to CCL by: Rene Sitt [Sitt{}students.uni-marburg.de]
 Hello,

the second derivatives (of the energy, w.r.t nuclear coordinates) isneeded to compute the frequencies, i.e. the 'Freq' directive in yourinput file. The Gaussian page has more detailed info on that:http://www.gaussian.com/g_tech/g_ur/k_freq.htm

 Regards,
 Rene Sitt
 On 03/18/2015 10:04 AM, Sergio Manzetti sergio.manzetti|,|outlook.com wrote:

 Sent to CCL by: "Sergio  Manzetti" [sergio.manzetti#outlook.com]
 Dear all, I am not sure where in the following G09 command the second order
 derivatives are issued (not actually looking to use them at all):
 !QCISD(FULL,Conver=16,MaxCyc=1400)/genECP
 %mem=9686MB
 %chk=R.chk
 %nprocshared=4
 #P QCISD(FULL,Conver=16,MaxCyc=1400)/genECP
 # Opt MaxDisk=50GB
 # Freq(VCD,Raman,Numerical) pop=NBOREAD
 # Gfinput IOP(6/7=3)  Pop=full  Density  Test
 # Units(Ang,Deg)
 Which part of this command line issues the second order derivatives?
 Thanks>