<p dir="ltr">Negative atomic position just means that someone did not properly reduce them. Just add 1.0, or use them "as is", they should be corrected by the code to their conventional forms.</p>
<p dir="ltr">___________________________<br>
Professor Laurence Marks<br>
Department of Materials Science and Engineering<br>
Northwestern University<br>
<a href="http://www.numis.northwestern.edu">www.numis.northwestern.edu</a><br>
<a href="http://MURI4D.numis.northwestern.edu">MURI4D.numis.northwestern.edu</a><br>
Co-Editor, Acta Cryst A<br>
"Research is to see what everybody else has seen, and to think what nobody else has thought"<br>
Albert Szent-Gyorgi</p>
<div class="gmail_quote">On Apr 23, 2015 7:27 AM, "Shakeel Khandy" <<a href="mailto:shakeelkhandy11@gmail.com">shakeelkhandy11@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div dir="ltr">
<div>
<div>I m a beginner and i want to study a compound of ABO3 type pervoskite with space group
<i>pbnm</i>.I have got confused with the atomic positions of <i>pbnm </i>spacegroup. Although the experimental atomic positions are in my hand,but the problem lies in the negative atomic positions given by experimental data. Is there any other method to have
the required atomic positions.<br>
<br>
<br>
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Thanking You<br>
</div>
<div><br>
</div>
Shakeel<br>
</div>
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</blockquote></div>