Dear Developers, I am trying to obtain the C6 dispersion coefficient from an RPA calculation using the `C6` directive within the `response` module. In the output file, I get the even (?) Cauchy moments, but not the `C6` coefficient explicitly. A `RESPFUN.C8` file is also created, but from the manual I understand that this is just an intermediate file and I can not easily reconstruct the C6 coefficient from it. Is the C6 coefficient printed somewhere directly, or can I obtain it in a simple way? Alternatively, should I re-construct the frequency-dependence from the Cauchy moment myself and integrate over the imaginary frequencies? I can't seem to be able to attach files to this ticket, but here is the input I used: ``` **DALTON INPUT .RUN RESPONSE **INTEGRALS .DIPLEN .SPHMOM 1 **WAVE FUNCTIONS .DFT PBE **RESPONSE .TDA *LINEAR .DIPLEN *C6 .C6ATM .MAXMOM 10 **END OF DALTON INPUT ```