2. Definition
Butene
has two isomers due to the lack of
rotation caused by the double bond.
The two have the same molecular formula,
but are different in their physical
appearance.
Cis:
groups are on the same side
Trans: groups are on opposite sides
3. Trans 2-Butene
As
you may know, this
structure has 4 Carbons
and 8 hydrogens. This is
Trans 2-butene meaning
the groups are on
opposite sides.
C4H8
4. Cis 2-Butene and Trans 2Butene
The bowl shaped structure is Cis 2-Butene
meaning its groups are on the same side and
the double bond is between the 2nd and 3rd
Carbons.
The worm shaped
structure is Trans 2Butene meaning its
groups are on
opposite sides and
the double bond is
between the 2nd
and 3rd Carbons.
5. Fun Facts
Butene
is used in the formation of ground
level ozone.
Butene is smelly, but colorless.
Butene is very flammable.
http://apps.sepa.org.uk/spripa/Pages/
SubstanceInformation.aspx?pid=26
6. Summary
I
learned that 2-Butene has 2 isomers
caused by the double bond which make
the structure hard to rotate. I also learned
the difference between “cis” and “trans”.
