Compounds consisting wholly of carbon and oxygen, e.g.
CO,
O=C=O,
O=C=C=C=O,
O04375.png
Source:
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1355 (https://doi.org/10.1351/pac199567081307)