Chlorine monofluoride

Chlorine monofluoride is a volatile interhalogen compound with the chemical formula ClF. It is a colourless gas at room temperature and is stable even at high temperatures. When cooled to −100 °C, ClF condenses as a pale yellow liquid. Many of its properties are intermediate between its parent halogens, Cl2 and F2.

Reactivity
Chlorine monofluoride is a versatile fluorinating agent, converting metals and non-metals to their fluorides and releasing Cl2 in the process:


 * W + 6ClF → WF6 + 3Cl2


 * Se + 4ClF → SeF4 + 2Cl2

ClF can also chlorofluorinate compounds, either by addition across a multiple bond or via oxidation:


 * CO + ClF →[[Image:Carbonyl-chlorofluoride-2D.png|50px]]