CCL: problem of defining spin multiplicity in NWchem
- From: "clara song" <clarasong83[A]gmail.com>
- Subject: CCL: problem of defining spin multiplicity in NWchem
- Date: Thu, 20 Aug 2009 13:45:33 -0400
Sent to CCL by: "clara song" [clarasong83{}gmail.com]
plz help
thanks
> "clara song clarasong83-$-gmail.com" wrote:
>
> Sent to CCL by: "clara song" [clarasong83() gmail.com]
> Hi, I am a new user to Nwchem. When I tried to calculated excited states by
suing tddft for Nb_9 (doublet state), I experienced problem when defining the
spin multi, the following is my input file, and I do not know where I should put
the word "doublet", if I insert it after MP2, it gave me error, and if
I do not specify, there is the default value: multi=1 in my output, which
conflicts with number of electron.
>
> I know if I use DFT i.e. b3lyp, I can define by MULT=2, I just wonder how
can I do that within MP2(UMP2)? Please give your advice. Thank you very much.
>
> start nb9lowest_mp2_tddft
> title "nb9lowest_mp2_tddft"
> geometry
> Nb -1.448794 -0.453923 -1.535258
> Nb 1.115437 -0.937601 1.610466
> Nb 0.176599 1.493887 -1.555186
> Nb -0.486721 -2.387848 -0.135716
> Nb 0.374053 1.612074 1.405017
> Nb -1.458063 -0.679815 1.443668
> Nb -1.858453 1.516153 0.182833
> Nb 2.251542 0.921053 -0.095359
> Nb 1.333402 -1.084980 -1.323466
> end
> basis
> Nb library lanl2dz_ecp
> end
> ecp
> Nb library lanl2dz_ecp
> end
>
> UMP2
> freeze core
> end
>
> TDDFT
> NROOTS 3
> TARGET 1
> END
>
> TASK TDDFT OPTIMIZE
>
>