Tetrahalomethanes

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The tetrahalomethanes (THM) are organic compounds in which all four hydrogen atoms in methane are replaced by halogens . Tetrahalomethanes belong to the haloalkanes or the subgroup of halomethanes .

Representative

Structural formula Tetrafluoromethane Structural Formula V1.svg Carbon tetrachloride (flat) .svg Tetrabromomethane Structural Formula V1.svg Tetraiodomethane Structural Formula V1.svg
Surname Tetrafluoromethane Carbon tetrachloride Tetrabromomethane Tetraiodomethane
Melting point −184 ° C −23 ° C 90.1 ° C 171 ° C (decomposition)
boiling point −128 ° C 76.7 ° C 189.5 ° C -
Dome model Carbon-tetrafluoride-3D-vdW.png Carbon-tetrachloride-3D-vdW.png Carbon-tetrabromide-3D-vdW.png Carbon-tetraiodide-3D-vdW.png

The corresponding tetrahalomethanes of all halogens are known: tetrafluoromethane ( carbon tetrafluoride ), carbon tetrachloride ( carbon tetrachloride ), tetrabromomethane ( carbon tetrabromide ), tetraiodomethane ( carbon tetraiodide ).

There are also a number of mixed tetrahalomethanes, for example trifluoroiodomethane , dibromodifluoromethane or bromochlorofluoroiodomethane .

See also

Web links

Commons : Tetrahalomethanes  - Collection of images, videos and audio files

Individual evidence

  1. ↑ a b Entry on tetrafluoromethane in the GESTIS substance database of the IFA , accessed on February 29, 2020(JavaScript required) .
  2. ↑ a b Entry on carbon tetrachloride in the GESTIS substance database of the IFA , accessed on February 29, 2020(JavaScript required) .
  3. ↑ a b Entry on tetrabromomethane in the GESTIS substance database of the IFA , accessed on February 29, 2020(JavaScript required) .
  4. ↑ Entry on tetraiodomethane. In: Römpp Online . Georg Thieme Verlag, accessed on February 29, 2020.