crystal structure of <a href="https://en.wikipedia.org/wiki/Molybdenum_trioxide" class="extiw" title="en:Molybdenum trioxide">en:Molybdenum trioxide</a>
<a href="//commons.wikimedia.org/wiki/User:Orci" title="User:Orci">Orci</a>
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Eigenes Werk (own work), data source: <a rel="nofollow" class="external text" href="http://rruff.geo.arizona.edu/AMS/result.php?mineral=Molybdite">American-Mineralogist-Crystal-Structure-Database: Molybdite</a>