How to setup "ecp"?


Gets Around
Please tell me how to set the basis for the ECP?
I found that this version works:

start nw
charge 0

geometry   
 Tl      0.00000008649682   0.00000008649682   1.16307749470199   
 F      1.20146721123637   1.20146721123637  -0.03838606226338   
 F      0.43976750287250  -1.64123480060569  -0.03838571621930  
 F     -1.64123480060569   0.43976750287250  -0.03838571621930  
end 

basis cartesian
 * library def2-tzvp
end 
ecp
 Tl library def2-ecp
end 

dft 
 cgmin 
 xc m06
end 

driver 
 clear 
 TIGHT
 eprec   1e-06
 maxiter 2000
end 

task DFT optimize


In the "basis" I set def2-tzvp for all atoms, and in the "ecp" I add def2-ecp for thallium only.
But is it right?

Forum Vet
Yes,
Your input is correct.

Cheers, Edo


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