[Pw_forum] Parameters for Dispersion Correction

[Valentina Cantatore]

Hi everyone!

I'm trying to use the Grimme dispersion correction in my calculations.
The studied system is CH3NH3PbI3.

Since I'm using the v.5.0.2 (svn rev. 9656) of the program I used the
keyword london='.true.'

The problem is that I have in the output the following lines:

 -------------------------------------
     Parameters for Dispersion Correction:
     -------------------------------------
       atom      VdW radius       C_6

        Pb         3.673        *******
        I          3.575        *******
        C          2.744         60.710
        N          2.640         42.670
        H          1.892          4.857

Does it mean that C_6 are not defined for Pb and I? Or am I wrong in
something?

Thank you for your answers.

Valentina Cantatore
PostDoc Researcher @ DISIT - Università del Piemonte Orientale
Alessandria, Italy
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