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<p>Dear QE users,</p>
<p><br>
</p>
<p>I'm performing calculations on organic molecular crystal structures using pw.x. For organic molecular structures, it is quite common that a part of a molecule is positioned across a boundary of two neighboring cells (meaning not all atoms are positioned
inside the basic cell). When I use pw.x (doing SCF calculations), the atoms that do not lie inside the basic cell are automatically re-positioned so that they do lie inside the basic cell (I came to this conclusion by analyzing the pw.x output file). As a
result, the molecules of the structure get cut into pieces. I wasn't sure if this had to do with the symmetry specification - I tried to specify symmetry using either the "space_group" keyword or using "ibrav = 0", but I ended with the same result for either
approach.<br>
<br>
This is a little bit troublesome for me, because I later use the SCF results to plot the charge density using pp.x and I would very much like if the molecules were preserved. If I understand correctly, I could potentially fix this by editing the pp.x output
manually, however, is there another way to bypass this problem? The version I'm using is "<span>PWSCF v.6.4.1</span>".<br>
<br>
Thank you for any recommendations.<br>
<br>
Sincerely,</p>
<p>F.Fòukal</p>
<p>UCT Prague</p>
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