quick question RE:Spin-orbit ECPs (Stuttgart)


Just Got Here
Hey.

I'm just learning to use NWChem (wrt my BsC project), and need to run some calculations (HgBr2 geometry optimization and DFT energy) using Stuttgart ECPs. For spin-orbit ECPs I'm planning to use Stuttgart ECPs:

http://www.tc.uni-koeln.de/PP/clickpse.en.html

"
Pseudopotential ECP60MDF for Hg

! Q=20., MEFIT, MCDHF+Breit, Ref 37.
Hg 0
ECP60MDF 5 60
H-Komponente
1
2 1.000000 0.000000
S-H
2
2 12.413071 275.774797
2 6.897913 49.267898
P-H
4
2 11.310320 80.506984
2 10.210773 161.034824
2 5.939804 9.083416
2 5.019755 18.367773
D-H
4
2 8.407895 51.137256
2 8.214086 76.707459
2 4.012612 6.561821
2 3.795398 9.818070
F-H
2
2 3.273106 9.429001
2 3.208321 12.494856
G-H
2
2 4.485296 -6.338414
2 4.513200 -8.099863

! References:
! [37] D. Figgen, G. Rauhut, M. Dolg, H. Stoll, Chem. Phys. 311, 227 (2005).

"


To qoute NWChem manual:

"For example, in the literature the Stuttgart potentials are defined as ?Ul and, hence, have to be multiplied by 2 / (2l + 1)."

Does that mean that I need to multiply each coefficient in manually specified ECP by 2 / (2l + 1)?

Best -

Luna

Forum Vet
Luna
This is the corresponding NWChem input for the Hg ECP

ECP
Hg nelec 60
Hg ul
2 1.0000000 0.0000000
Hg S
2 12.4130710 275.7747970
2 6.8979130 49.2678980
Hg P
2 11.3103200 80.5069840
2 10.2107730 161.0348240
2 5.9398040 9.0834160
2 5.0197550 18.3677730
Hg D
2 8.4078950 51.1372560
2 8.2140860 76.7074590
2 4.0126120 6.5618210
2 3.7953980 9.8180700
Hg F
2 3.2731060 9.4290010
2 3.2083210 12.4948560
Hg G
2 4.4852960 -6.3384140
2 4.5132000 -8.0998630
END


Forum >> BSE: Basis Set Exchange >> General BSE Topics