<div dir="ltr">Dear Andrii<div>Thanks for the information.</div><div><br></div><div>Just this afternoon doing trial and error I get that the best way for passing the unit cell parameters is using</div><div>ibrav and celdim according with manual, and for passing the asymmetric unit for atoms and their respective equivalents then I have to use the space_group and uniqueb. So I think that is the same that you say in your e-mail.</div><div><br></div><div>About value of
<span style="font-family:Verdana,Geneva,sans-serif">ecutwfc</span> I have seen that depending of elements on your structure I need to increase this value (but probably I understand incorrectly). I have C, H, Cl, N, Cu and I, therefore using PBESOL PP I have seen that ecutwfc should be 45-46 and not 80. </div><div><br></div><div>I'm starting to use QE so I need time to learn....</div><div><br></div><div>Thanks</div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="color:rgb(61,61,61);font-family:Heebo,sans-serif;font-size:12px"><div style="font-weight:bold">Javier González Platas</div><div>Research_ID: I-1937-2015</div><div>Orcid: 0000-0003-3339-2998 </div></div><div style="color:rgb(61,61,61);font-family:Heebo,sans-serif;font-size:12px"><br></div><div style="color:rgb(61,61,61);font-family:Heebo,sans-serif;font-size:12px"><img src="https://static.ull.es/marca/logo-ull-firma.png" title="Universidad de La Laguna" style="border:0px;vertical-align:middle;max-width:100%;height:auto;width:150px"></div><div style="color:rgb(61,61,61);font-family:Heebo,sans-serif;font-size:12px"><br></div><div style="font-family:Heebo,sans-serif;font-size:12px;color:rgb(92,6,140)"><div style="font-weight:bold">Departamento de Física</div><div>Avda. Astrofísico Fco. Sánchez s/n<br></div><div><div>Apartado 456<br></div><div>38200 La Laguna. S/C de Tenerife</div></div><div><br></div><div><div>T. 922 318 251</div><div>M. 629 080 140</div></div><div><hr style="height:0px;margin:12px 0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;border-top-style:solid;border-top-color:rgb(235,235,235);clear:both"></div><div style="color:rgb(186,190,193);font-size:11px"><a href="https://www.ull.es/informacion-sobre-web-institucional/#aviso-confidencialidad" style="background-color:transparent;color:rgb(186,190,193);text-decoration:none" target="_blank">Aviso de confidencialidad</a></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">El lun., 26 oct. 2020 a las 18:31, Andrii Shyichuk (<<a href="mailto:andrii.shyichuk@chem.uni.wroc.pl">andrii.shyichuk@chem.uni.wroc.pl</a>>) escribió:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
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<p>Dear <span>Javier, <br><br></span>As the manual says, {ibrav=0}: "crystal axis provided in input: see card CELL_PARAMETERS".<br>With ibrav=0, you only specify the cell parameters. Remove space_group and uniqueb, and specify all of the atoms in the cell.<br><br>Alternatively, if you use space_group, you specify only the irreducible atoms (i.e. like in a cif file).<br>But, you must specify celldm values and not CELL_PARAMETERS. Ibrav must be then non-zero and correspond to the space group. Also, make sure that you use uniqueb correctly. <br><br>Also, I wonder why your ecutwfc is so high. <br><br>Best regards. <br>Andrii </p>
<p>W dniu 2020-10-26 17:41, Javier GONZALEZ PLATAS napisał:</p>
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<div>Hello</div>
<div>I'm trying to use space-group directive in order to give only the atoms in the asymmetric unit. But I don't know why I'm having problem with this.</div>
<div>My partial code is</div>
<div>...</div>
<div>&SYSTEM <br> !ibrav=0 <br> space_group=14<br> uniqueb=.true.<br> nat=13<br> ntyp=6<br> ecutwfc=80.0<br> ecutrho=450.0<br>/</div>
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<div>CELL_PARAMETERS (angstrom)<br>13.1164 0.0000 0.0000<br> 0.0000 4.2363 0.0000<br>-1.0566 0.0000 15.0983</div>
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<div>I have try to use ibrav=0 and without ibrav but always I have an error mensaje. The space group is 14 (P 21/c) What am I doing wrong?</div>
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<div>Thanks for help</div>
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<div>Research_ID: I-1937-2015</div>
<div>Orcid: 0000-0003-3339-2998 </div>
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<div style="color:rgb(61,61,61);font-family:Heebo,sans-serif;font-size:12px"> </div>
<div style="color:rgb(61,61,61);font-family:Heebo,sans-serif;font-size:12px"><img style="border: 0px; vertical-align: middle; max-width: 100%; height: auto; width: 150px;" title="Universidad de La Laguna" src="cid:175664c9de1527484c21" alt=""></div>
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<div style="font-family:Heebo,sans-serif;font-size:12px;color:rgb(92,6,140)">
<div style="font-weight:bold">Departamento de Física</div>
<div>Avda. Astrofísico Fco. Sánchez s/n</div>
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<div>Apartado 456</div>
<div>38200 La Laguna. S/C de Tenerife</div>
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<div>T. 922 318 251</div>
<div>M. 629 080 140</div>
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<div style="color:rgb(186,190,193);font-size:11px"><a style="background-color:transparent;color:rgb(186,190,193);text-decoration:none" href="https://www.ull.es/informacion-sobre-web-institucional/#aviso-confidencialidad" target="_blank">Aviso de confidencialidad</a></div>
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