3.3.4 - Alkenes Flashcards
What are the two parts that make up double bond
Bond 1 = Covalent bond there are 2 electrons between C atoms
Bond 2= Pi bond formed from the overlap of P orbitals
What is stereoisomerism
Molecules with the same molecular and structural formula but with different arrangement of atoms
What are geometric isomers
Caused by molecules with a C=C with two different groups attached to each C
What are E-Z isomers
Geometric isomers were nothing can rotate around C=C
What are the CIP priority rules
E - if priority are on opposite sides
Z- if priority are on same side
What are structural isomers
Molecules with the same molecular formula but different structural formula
Three types of structural isomers
Chain isomers
Position isomers
Functional group isomers
What are chain isomers
Caused by having a different carbon chain
What are position isomers
Caused by functional groups being in a different position
What are functional group isomers
Caused having different functional groups
What are alkenes
Unsaturated hydrocarbons
What reactions can occur with alkenes
Electrophilic addition
Addition polymerisation
Why are they attacked by electrophiles
Have a high electron density because of double carbon bond
Electrophiles that work on alkenes
Br2
HBr
H2O
H2SO4
Draw the reaction between Br2 and a symmetrical alkene
Draw