Define structural isomerism
Molecules have same molecular formula but different structural formula
Define stereoisomerism
Molecules have same structural formula, but different arrangement of atoms in space
What are the 3 types of structural isomerism?
- chain
- position
- functional group
Define chain isomerism
Type of structural isomerism; hydrocarbons with 4 or more carbons can form branched or chain isomers
E.g. C5H12=pentane, 2-methylbutane, 2,2-dimethylpropane
Define position isomerism
When a functional group is situated in different positions on a molecule
Define functional group isomerism
When molecules have same molecular formula but different functional groups
Where would the hydrogen atoms be in trans-but-2-ene?
On opposite sides of double bond
What does cis-but-2-ene look like?
Hydrogens on same side of double bond
What are the requirements of E/Z isomers?
- no rotation around double bond
- different groups on each C in double bond
