Chlorine monofluoride

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Chlorine monofluoride
Structure and length of the ClF molecule Space-filling model of the ClF molecule
Molecular formula ClF
Molar mass 54.45 g mol−1
CAS number [7790-89-8]
Melting point −155.6 °C
Boiling point −100.1 °C
Density and phase 1.62 g cm−3
(liquid, −100 °C)
Dipole moment 0.881 D
(2.94 × 10−30 C m)
Thermodynamic data
Standard enthalpy
change of formation

Δfgas
−56.5 kJ mol−1
Standard molar entropy
gas
217.91 J K−1 mol−1
Heat capacity, Cp 33.01 J K−1 mol−1
Disclaimer and references

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.

[edit] 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 →

[edit] External links

[edit] References

  1. Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.). Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.



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