Dear MRCC Developers,
It is great news that now MRCC supports ECP's!
Do you plan to implement spin-orbit part of ECP to be able to perform the two-component coupled cluster calculations (with enabled spin-orbit interaction)?
At the HF or DFT level the spin-orbit ECP is available in some packages like Turbomole and NWChem. But not at the CC level.
Taking into account already implemented Dirac interface does the task reduce to the calculation of ECP spin-orbit integrals without considerable modification of the code (in the case of Abelian groups)?
