\(\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{|\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,|} \\
{{}^ - O - S - O - S - {O^ - }} \\
{|\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,|} \\
{O\,\,\,\,\,\,\,\,\,\,\,\,O}
\end{array}\)
$NO , N _{2} O , B _{2} O _{3}, N _{2} O _{5}, CO$, $SO _{3}, P _{4} O _{10}$