<div dir="ltr">Dear all Apologies if my question is silly but I prefer sound fool and doing things right than make a fool mistake. I need to calculate some MCO bond energy in a 3D periodic system. My question is related to the peculiarity of CP2K. I mean if I would do this using a pure plane-wave code I wouldn't have to care about BSSE while on contrary doing on a pure GTO code either I use a fully converged basis-set or I need to add it. My idea was that on CP2K I do not need to use BSSE but I've seen the key BSSE is present as sub-field of FORCE EVAL. So I am confused now :-) Do I need or do I need not to care about BSSE? any help or give an explanation will be really welcome </div>