Suboxide

<p>Suboxides are a class of <a href="/facts/Oxide/DXtoVe1C">oxides</a> wherein the <a href="/facts/Electropositive/H7Vq7Uah">electropositive</a> element is in excess relative to the “normal” <a href="/facts/Oxide/DXtoVe1C">oxides</a>.  When the electropositive element is a metal, the compounds are sometimes referred to as “metal-rich”.  Thus the normal oxide of <a href="/facts/Caesium/dXKN1S5k">caesium</a> is Cs2O, which is described as a Cs+ salt of O2−.  A suboxide of caesium is Cs11O3, where the charge on Cs is clearly less than 1+, but the oxide is still described as O2−.  Suboxides typically feature extensive bonding between the electropositive element, often leading to <a href="/facts/Atom_cluster/EsuLgxJU">clusters</a>.
</p><p>Examples of suboxides other than alkali metal derivatives:
</p>
<ul><li><a href="/facts/Carbon_suboxide/5QnA75MN">Carbon suboxide</a>, C3O2;</li>
<li><a href="/facts/Boron_suboxide/91BkPrz4">Boron suboxide</a>, B6O;</li>
<li><a href="/facts/Phosphorus_suboxide/km24GQjl">Phosphorus suboxide</a>, PO;</li>
<li>Titanium suboxides, TiO, Ti2O3, Ti3O5, Ti4O7, and Ti5O9.</li></ul>

Suboxide open-in-new

Suboxide