Alkenes (OG) Flashcards
Define alkene
An alkene is an unsaturated hydrocarbon
Where are sigma bonds located in an alkene
Between carbon atoms and hydrogen atoms they are also located in the double bond
What is a Pi Bond and where is it located
a covalent bond formed when 2 orbitals overlap sideways it is located as the second bond in the Double bond of an alkene
Why is there no rotation around the CC double bond?
Because of the Pi orbital electron density above and below the single bond, which holds the carbon atoms in place
Structure of an alkene across the double bond is locked because?
The double bond cannot rotate due to its Pi bonds
Alkenes can form stereoisomers because?
The double bond cannot rotate
Alkenes are highly reactive. Why?
High electron density of the double bond and because pi bond is easier to break due to them overlapping sideways
Why is the double bond a region of high electron density?
Because the double bond contains two pair of electron for each type of bond
What determines how Alkenes react?
The region of high electron density aka the double bonds
Alkenes react through a process called electrophillic addition, define this process.
a chemical reaction that occurs when an electrophile attacks a substrate with a multiple bond, resulting in the addition of one or more simple molecules
Which is more electronegative, hydrogen or halogen atoms
Halogen atoms
Hydrogen halide molecules have a_____________ dipole
Permanent
Define electrophile.
a chemical species that is attracted to electrons and accepts a pair of electrons to form a bond with a nucleophile
When drawing an curly arrow
Make sure the arrow starts exactly where the electrons are moving from and ends exactly where they are moving to
Define Heterolytic fission
chemical process that occurs when a covalent bond breaks unevenly, resulting in one atom receiving both electrons from the bond
