What is "oxalyl"

Oxalyl \Ox"a*lyl\, n. [Oxalic + -yl.] (Chem.)

1. A hydrocarbon radical ( C2O2) regarded as a residue of oxalic acid and occurring in derivatives of it.

2. An old name for carbonyl.

3. An old name for carboxyl.

n. (context organic chemistry especially in combination English) Either the univalent or the divalent radicals derived from oxalic acid by removal of one or two hydrogen atoms

The oxalyl cation, also known as oxalic, has the chemical formula [CO]. It is the cation derived from oxalic acid.

Chemical compounds containing the oxalyl cation include:

• Oxalyl chloride, COCl
• Oxalyl fluoride, COF