1,2-Difluoroethylene, also known as 1,2-difluoroethene, is an
organofluoride
Organofluorine chemistry describes the chemistry of organofluorine compounds, organic compounds that contain a carbon–fluorine bond. Organofluorine compounds find diverse applications ranging from oil and water repellents to pharmaceuticals, ...
with the molecular formula CHF. It can exist as either of two
geometric isomers
Geometry (; ) is a branch of mathematics concerned with properties of space such as the distance, shape, size, and relative position of figures. Geometry is, along with arithmetic, one of the oldest branches of mathematics. A mathematician w ...
, ''cis''-1,2-difluoroethylene or ''trans''-1,2-difluoroethylene.
It is regarded as a
hazardous chemical
Dangerous goods are substances that are a risk to health, safety, property or the environment during transport. Certain dangerous goods that pose risks even when not being transported are known as hazardous materials ( syllabically abbreviate ...
for being toxic by inhalation, and a volatile chemical, and it causes irritation when it comes into contact with the skin and mucous membranes.
''E-Z'' relative stability
For most 1,2-disubstituted compounds that exhibit
''cis''–''trans'' isomerism, the ''trans'' (''E'') isomer is more stable than the ''cis'' (''Z'') isomer. However, 1,2-difluoroethylene has the opposite situation, with the ''cis'' more stable than the ''trans'' by 0.9 kcal/mol.
See also
*
1,1-Difluoroethylene
*
Perfluoroisobutene
Perfluoroisobutene (PFIB) is the perfluorocarbon with the formula . Classified as a perfluoroalkene, it is the fluorinated counterpart of the hydrocarbon isobutene. This colorless gas is notable for its high toxicity.
Production and reactions
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References
{{DEFAULTSORT:Difluoroethylene, 1, 2-
Fluoroalkenes
Hydrofluoroolefins