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<p>always generated in situ and used in catalytic quantities, at least in organic reactions.</p>

<p><big> Structure </big></p>
<p>RuO<sub>4</sub> forms two crystal structures, one with <a href="page.php?w=Cubic_crystal_system">cubic</a> symmetry and another with <a href="page.php?w=Monoclinic_crystal_system">monoclinic</a> symmetry, isotypic to OsO<sub>4</sub>. The molecule adopts a <a href="page.php?w=tetrahedral_molecular_geometry">tetrahedral</a> geometry, with the Ru-O distances ranging from 169 to 170 pm.</p>

<p><big>Uses</big></p>
<p><big>Isolation of ruthenium from ores</big></p><p>
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