Hello,<div>this can get complicated but general advice would be to use a MOLOPT basis set of at least double-zeta quality (two basis functions per orbital type).</div><div>In a modern version of cp2k the can locate its DATA_DIR which contains files with basis sets the first choice would be </div><div>DZVP-MOLOPT-SR-GTH</div><div>You can see if it might be adequate by then increasing to a triple zeta </div><div>TZV2P-MOLOPT-SR-GTH</div><div>and seeing if you are happy that things your are interested in haven't changed significantly.</div><div>Other basis sets are available and there is quite a literature around ....<br>Matt</div><div><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Thursday, 6 October 2022 at 21:06:57 UTC+1 sc131...@gmail.com wrote:<br/></div><blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div dir="auto">Hi all, <div dir="auto"><br></div><div dir="auto">Can anyone please tell me how do we choose basis set is cp2k? Do we optimize the basis set for different type of atoms? If yes, then how? </div><div dir="auto"><br></div><div dir="auto">Thanking you in anticipation. </div><div dir="auto"><br></div></div>
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