L18 - Stereoisomers, Naming Isomers

Flashcards covering isomers, constitutional isomers, stereoisomers, conformational isomers, configurational isomers, diastereomers, and enantiomers.

Isomers

Molecules that have the same molecular formula.

Constitutional Isomers

Isomers with a different nature or sequence of bonds.

Stereoisomers

Isomers with the same molecular formula and connectivity but a different arrangement of groups in space.

Conformational Isomers

Stereoisomers that differ by rotation around a single bond.

Configurational Isomers

Stereoisomers that require breaking and reforming a bond to convert between them.

Diastereomers

Configurational isomers that are not mirror images.

Enantiomers

Configurational isomers that are non-superimposable mirror images.

Z (in stereochemistry)

Indicates groups are on the same side of a double bond (from the German zusammen, meaning together).

E (in stereochemistry)

Indicates groups are on opposite sides of a double bond (from the German entgegen, meaning opposite).

Cis

Groups on the same side in cyclic structures

Trans

Groups on the opposite side in cyclic structures