Cis-trans geometric isomers in cyclic compounds

Geometric isomerism or cis-trans it occurs in aliphatic compounds and in cyclic compounds. In the text "Igeometrical summation or cis-trans” you've seen about this kind of stereoisomerism in open-chain compounds, now let's see when it occurs in cyclic compounds.

Geometric spatial isomerism or cis-trans occurs in closed-chain compounds that have two or more different groups attached to at least two carbon atoms in the chain. But, these different ligands on one carbon atom need to be the same as the ligands on the other carbon atom.

For example, consider the case of bromocyclopentane:

Bromocyclopentane formula

this compound no presents geometric isomerism cis-trans, as it has only one different ligand, bromine. Now look at the compound below:

Formula of 1,2-dimethylcyclobutane isomers

Two carbons in this structure have different ligands and the same as the other carbon atom. In the first case, the same ligands are on the same side of the plane, so this is a stereoisomer. cis. In the second molecule, the same ligands are on opposite sides of the plane, being called trans.


By Jennifer Fogaça
Graduated in Chemistry

Source: Brazil School - https://brasilescola.uol.com.br/quimica/isomeria-geometrica-cis-trans-compostos-ciclicos.htm

Optical Illusion Test: Find the grasshopper in the picture

Optical Illusion Test: Find the grasshopper in the picture

O optical illusion test it's a great source to challenge one's cognitive skills while having fun....

read more

Microsoft Executive Warns of Real Harm Caused by AI

Artificial intelligence is a technology super present in today's life and increasingly commented....

read more

Improve your attention with optical illusion exercises

A optical illusion it can trick your visual system and make you see in the same image, different ...

read more