From NWChem
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                 Gets Around 
                
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		                        | 1:18:29 AM PDT - Tue, May 7th 2013  | 
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		                        It seems to me that it's not working. In the following code geometry and energy are the same in the presence and absence of "disp vdw 3". 
 
start nw
charge 0
geometry   
 He      0.00000000000000   0.00000000000000  -1.40439630000000  
 He      0.00000000000000   0.00000000000000   1.40439630000000  
end 
basis spherical
 * library cc-pvtz
end 
dft 
 cgmin 
 xc m06-2x
 disp vdw 3
end 
driver 
 clear 
 TIGHT
 eprec   1e-06
 maxiter 2000
end 
task DFT optimize  
 
 
Quote:Bert  May 6th 11:50 amGeometry optimizations within DFT Gaussian basis set module can be done for all DFT functionals. 
dft
 disp vdw 3 
 
end
 
task dft optimize  
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