Geometric isomers Flashcards
Cis ,trans, E-Z
What are isomers
Molecules that have the same molecular formula but different arrangement of atoms in space
What are stereoisomers
The atoms making up the isomer are joined in the same order, but still manage to have a different spatial arrangement
How geometric isomers arise
It happens when there is a restriction in rotation in the molecule (Usually a double carbon bond due to the p-orbitals forming pi bonds)
Trans / E isomers
Meaning across ( The molecules are opposite planars / sides from each of the carbon atoms)
Cis / Z isomers
The molecules are on the same planars from each of the carbon atoms
Why do geometric isomers happen more often in alkenes
The double carbon bond prevents rotation and that is how geometric isomers can occur
Priorities arrangement
Molecules with higher atomic numbers get higher priority
