Dear Anupriya Nyayban,<div><br /></div><div>The simulation box is far too small </div><div>Moreover, simulating a single molecule, you may want to use </div><div>PERIODIC NONE</div><div>both in </div><div><a href="https://manual.cp2k.org/cp2k-2023_1-branch/CP2K_INPUT/FORCE_EVAL/DFT.html" style="font-family: monospace; text-transform: uppercase;">DFT</a><span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: monospace; font-size: medium; text-transform: uppercase;"> / </span><a href="https://manual.cp2k.org/cp2k-2023_1-branch/CP2K_INPUT/FORCE_EVAL/DFT/POISSON.html" style="font-family: monospace; text-transform: uppercase;">POISSON</a></div><div>as well as in </div><div><a href="https://manual.cp2k.org/cp2k-2023_1-branch/CP2K_INPUT/FORCE_EVAL/SUBSYS.html" style="font-family: monospace; text-transform: uppercase;">SUBSYS</a><span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: monospace; font-size: medium; text-transform: uppercase;"> / </span><a href="https://manual.cp2k.org/cp2k-2023_1-branch/CP2K_INPUT/FORCE_EVAL/SUBSYS/CELL.html" style="font-family: monospace; text-transform: uppercase;">CELL</a></div><div>Anyway the simulation box should be much larger.</div><div><br /></div><div>Regards</div><div>Marcella</div><div><br /><br /></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Tuesday, April 4, 2023 at 8:47:34 AM UTC+2 Anupriya Nyayban 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="ltr"><div>Dear CP2K users,</div><div><br></div><div>I am a new user of CP2K. I have optimized an explicit molecule of acetonitrile and suspect the final optimized structure. <br></div><div>I am unable to find where the mistake is!</div><div>The input file and the file with all the steps of the geometry optimization is attached herewith.</div><div><br></div><div>Thank you!<br></div><div><br></div><div><br><span>-- </span><br><div dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><div>With regards</div><div>Anupriya Nyayban</div><div>Project Associate</div><div>Pradeep Research Group,</div><div>DST Unit of Nanoscience & Thematic Unit of Excellence,<br></div><div>Department of Chemistry,<br></div><div>IIT Madras<br></div></div></div></div></div>
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