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Hi there:

I am new to NWChem and I would like to run some calculations for open shell systems. How can I set the multiplicity options in the input file for this sort of calculations?

Here is a sample of my input file for a closed shell system.

==============================
start

memory 700 MB noverify

echo

geometry units angstrom noautosym
He 0.0 0.0 0.0
end

basis "ao basis" spherical
* library cc-pvdz
end

dft
xc b3lyp
grid fine
odft
convergence energy 1d-6
iterations 150
end


set dft:frac t
set dft:nfrac 1
set dft:fnumall 1.000
set dft:nfracb 1
set dft:fnumallb 1.000

set dft:rpa t

task dft
======================

your prompt help would be greatly appreciated.

Thanks!


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