# Organic chemistry

Informally, organic chemistry is the study of molecules containing chains of carbon atoms (i.e. carbon-carbon bonds). To be more exact, it is the chemistry of carbon with the somewhat arbitrary exclusion of some molecules (such as carbon monoxide).

## Hydrocarbons

Hydrocarbons are molecules composed entirely of carbon and hydrogen. See the main article.

## Organometallics

Organometallic compounds are molecules containing metal-carbon bonds. For example, buttyllithium (${\displaystyle C_{6}H_{5}Li}$) is a hydrocarbon ring in which one hydrogen atom has been replaced with a lithium atom.