2-Fluoronitrobenzene

2-Fluoronitrobenzene is an organic compound with the formula FC6H4NO2. It is one of three isomeric fluoronitrobenzenes. A colorless liquid, it is prepared from 2-nitrochlorobenzene using the Halex process:
 * O2NC6H4Cl + KF  ->  O2NC6H4F  +  KCl