Source: cirosantilli/cis-trans-isomerism
= Cis-trans isomerism
{wiki=Cis–trans isomerism}
Exist because <double bonds> don't rotate freely. Have different properties of course, unlike <enantiomer>.
Bibliography:
* https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Map%3A_Essential_Organic_Chemistry_(Bruice)/06%3A_Isomers_and_Stereochemistry/5.01%3A_Cis-Trans_Isomers_Result_from_Restricted_Rotation from <LibreTexts>