<div>Dear Marcella<br /><br /> After performing the calculation using FDMNES, I observed a small peak before the main peak (the black line). However, the spectrum obtained from the CP2K calculation (the blue line) shows a huge peak in the same region. This makes me suspect that the data for this peak might be incorrect, and I am also concerned that my parameter settings may be improperly configured. Therefore, I am seeking some assistance. <br /></div><div><div> Thank you in advance for your time and help.</div><div>Eason</div></div><div><div dir="auto">在2026年6月6日星期六 UTC+8 22:29:13<Marcella Iannuzzi> 写道:<br /></div><blockquote style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi Eason<div><br /></div><div>What is exactly the problem. </div><div>The output seems OK</div><div>Regards</div><div>Marcella<br /><br /></div><div><div dir="auto">On Thursday, June 4, 2026 at 10:34:02 AM UTC+2 <a href="" rel="nofollow">easo...@gmail.com</a> wrote:<br /></div><blockquote style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Dear Community,<div> I would like to ask a question regarding a recent calculation. After adding an O<span style="font-family: "Google Sans Text", sans-serif; line-height: 1.15; margin-top: 0px;">2</span> molecule as an axial ligand to an <span style="font-family: "Google Sans Text", sans-serif; line-height: 1.15; margin-top: 0px;">Fe-N4</span> structure, the calculated XAFS spectrum using CP2K shows an intense peak at ~6999 eV. Could anyone kindly provide some insights into why this happens? I have found that this specific feature appears whenever the Fe center is bonded to O or S atoms. </div><div> ( GLOBAL :
RUN_TYPE ENERGY theoretical method:PBEh_ADMM with HFX of 45.000 % without RI-HFX basis set and pseudopotential:DZVP-MOLOPT-SR-GTH OT
GAPW
TD-DFT
</div><div> Fex :
POTENTIAL ALL BASIS_SET:def2-TZVP)</div><div> Thank you in advance for your time and help.</div><div>Eason</div></blockquote></div></blockquote></div>
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