2-particle density matrix for ccsd(t) calculation

Hello everyone,
I want to obtain the 2-particle density matrix from ccsd(t) calculation. Can it be performed with MRCC?
I am hopeful that the 'dens' keyword calculates the 2pdm, but it doesn't say anything about saving it to a file. So, to my guess, it uses the 2pdm internally.
Thanks,
Prasanta

Dear Prasanta,
Unfortunately, CCSD(T) 2-particle density matrices are currently not available.
Otherwise, 2-particle CC densities are stored in file CCDENSITIES in human-readable format.

Thank You very much, Prof. Kallay, for your quick reply.
Since you are experienced in this QC community, can you suggest any other program that can do that? I am looking everywhere without any answer.

Thank you very much
Prasanta

Dear Prasanta,

as noted by Prof. Kállay, the CCSD or CCSDT 2-RDMs are available in MRCC. Are those not sufficient?

If not, could you explain to us for what purpose do you need the CCSD(T) 2-RDM? As it is unusual that one needs the 2-RDM and not the 2 electron observable properties obtained with the 2-RDM, e.g., nuclear gradient.

Best regards,
Peter

Dear Dr. Nagy and Prof. Kallay,
I am extremely sorry for this late reply. I can use CCSD 2RDMs for our research in Quantum Chemical Topology. Could you please tell me the input file for that calculation? Also what are the basis (MO I guess) of the 2RDM?

Thank you very much for your kind responses and helps,
Prasanta

Dear Prasanta,
You need calc=CCSD and dens=2 in the input file. The densities are stored in file CCDENSITIES in MO basis.