Oxalyl
# Oxalyl

The oxalyl cation, also known as oxalic, has the chemical formula $[C_2O_2]^{2+}.$ It is the cation derived from oxalic acid.

Chemical compounds containing the oxalyl cation include:

## Related compounds/ions

* Oxalic acid, $C_2O_4H_2$
* The oxalate anion, $[C_2O_4]^{2−}$
* Oxalic anhydride, $C_2O_3$
* Acyl halides of oxalic acid, including:

   * Oxalyl chloride, $C_2O_2Cl_2$

   * Oxalyl fluoride, $C_2O_2F_2$
