Zusammenfassung der Ressource
Isomerism
- Structural isomerism
- chain isomerism
- same functional gp
- structural isomers that differ in the length of the main carbon chain
- Position isomerism
- differ only in the position of the functional group
- same functional gp
- Functional Group isomerism
- belongs to different homologous series
- Stereoisomerism
- cis-trans isomerism
- when there is C=C double bond, rotation is restricted
- CIS-
- same side
- has net dipole moment
- a slightly more polar molecule
- higher boiling point
- TRANS-
- Opposite side
- no net dipole moment
- non-polar
- lower boiling point
- Enatiomerism
- image is not superimposable
- a carbon atom bonded to 4 different atoms / functional groups
- middle carbon: chiral* carbon
- similar physical properties
- different interaction with polarized light
- plane of polarized light is rotated
- can be measured using a polarimeter
- |+x|=|-x|: same extent of rotation
- def: same molecular formula but different arrangements of atoms in space