Is the RI method a density fit calculation ?

[golden]

Hi All,
  I do have more of a question about the method of RI itself.

When considering RI calculation is it the same as a density fit calculation that can be run using pure functionals in gaussian? or is there any thing more to the RI calculation?

Thanks

[Turboooo]

Yes, density fit calculation an RI calcualtion have the same mathematical background.
In this two papers (Chem. Rev. 2010, 110, 5023–5063 and J. Mol. Struct. (Theochem) 2000, 529,  37-40) RI and density fitting are used for the same.