Organic Chemistry Isomerism
Terms
undefined, object
copy deck
- Chain isomerism
- Chain isomers differ only in strucure of C skeleton. Same chemical properties, different physical properties
- Positional isomerism
- Same functional group at different position on same C skeleton. Properties: similar chemical; different physical
- Functional group isomerism
- Different functional groups. Different chemical and physical properties
- Stereoisomerism
- Cis-Trans and optical isomerism
- Cis-trans isomerism
-
Restricted rotation in C=C.
2 different substituents are attached to each C. Same chemical but different physical properties - Priority for cis-trans
-
Atom directly attached to C=C
Rank according to atomic no
Higher atomic no=high prio - Cis-trans isomers
-
Cis (Z) on same side
Trans (E) on different side - Why do cyclic cpds exhibit Cis-trans isomerism?
- Atoms joined in a ring are not free to rotate around the sigma bonds of the ring.
- Optical isomerism
- Exists for chiral molecules
- Chirality?
- Objects that can't be superimposed on their mirror image
- Enantiomers
- Pair of non-superimposable mirror images
- What is a chiral carbon?
- A sp3 hybridized carbon atom which has 4 different atoms/groups attached to it