3.3.1.3. isomerism

Cards (8)

  • what are isomers?
    molecules with the same molecular formula but a different arrangement of atoms within the molecule
  • structural isomers 

    different structural arrangement of atoms - can be straight chains or branched chains but will have the same molecular formula
  • position isomers
    have the functional group of the molecule in a different position of the carbon chain
  • functional group isomers
    have a different arrangement of the same molecular formula so that the molecule has a different functional group
  • stereoisomers
    different spacial arrangement
  • E-Z isomerism
    limited rotation around a double carbon bond means that groups can either be 'together' or 'apart'
  • E/Z isomerism
  • Cahn-Ingold-Prelog Priority Rules - E/Z isomerism
    • the atom/group on each side of the double bond with the higher Ar/Mr is given the higher priority
    • these groups are used to determine if it is the E or Z isomer