CCL:G: Gaussian Solvent Optimization Problem
- From: "Ol Ga" <eurisco1#pochta.ru>
- Subject: CCL:G: Gaussian Solvent Optimization Problem
- Date: Tue, 23 Sep 2008 14:23:14 -0400
Sent to CCL by: "Ol Ga" [eurisco1 a pochta.ru]
Dear Kostas Sakellaris,
Your input file is wrong. I mean your syntax and idea. I suggest you to use IOP
with caution. I suggest you to use IOP if you know what you do.
You made an error you typed IOp(1/19=7). Your definition of ECP is not very
right. Yes, it works. But there is other style in Gaussian manual. And the whole
my practice got me evidences that long description is the best choice. Please,
see the corrected by me input file below.
I hope it works (I checked on other Re - compound ) :-)
Sincerely,
Ol Ga
%Chk=re
%Mem=1GB
%NProc=2
#P B3LYP/lanl2dz 5D 7F NoSymm POP=REGULAR GFPRINT GFINPUT IOp(6/7=3)
# SCRF=(CPCM, Solvent=Acetonitrile,read)
# SCF(MaxCyc=250,Conver=6) Geom=Checkpoint Guess=Read Opt=gdiis
Re complex
0,1
-Re, element_1, element_2, , element_N 0
Lanl2dz
****
!here is a description of ECP by definition of GAUSSIAN manual
-Re 0
Lanl2dz
! CPCM, Solvent=Acetonitrile
TSNUM=100
RADII=UAKS
> Sent to CCL by: "Kostas Sakellaris" [ksakell _ chem.uoa.gr]
> Hello! I'm a new user and this is my first question.
> I'm trying to perform a geometry optimization in GAUSSIAN03 on a
> Rhenium complex compound using as solvent acetonitrile. The geometry
> checkpoint that I use is that of the air-phase optimization which
> was successfully carried out at an earlier calculation. The gaussian input
file is as follows:
> %Chk=re
> %Mem=1GB
> %NProc=2
> #P B3LYP/LANL2DZ 5D 7F
> POP=REGULAR GFPRINT GFINPUT IOp(6/7=3) IOp(1/19=7)
> SCRF=(CPCM, Solvent=Acetonitrile,)
> SCF(MaxCyc=250,Conver=6) Geom=Checkpoint Guess=Read Opt=gdiis TEST
>
> Re complex
>
> 0,1
>
> TSNUM=100
> RADII=UAKS
> The problem is that instead of getting lower energy levels after
> each iteration the energy goes up!
> I'd greatly appreciate any suggestions since I'm new in DFT
> calculations and I've been trying to cope with this problem for more than 3
weeks.
> Thank you in advance
> Kostas Sakellaris
> ksakell- -chem.uoa.gr