They have one or more stereogenic centres. These have varying physical and chemical properties. Stereoisomers that do not form mirror images of each other are termed as diastereomers.Īll have the same physical and chemical properties (except interaction with light). Stereoisomers that are non-superimposable images of each other. Diastereomers, on the other hand, are stereoisomers that do not form mirror images.ĭifference Between Enantiomers and Diastereomers These can be understood by one’s hands which are mirror images of each other. Stereoisomers that form mirror images of each other are termed as enantiomers. These isomers can be classified into two types- enantiomers and diastereomers.īefore we find out how to calculate stereoisomers, it is important to learn the types of stereoisomers and the distinctions between them. Isomers that comprise the same parts but differ in spatial orientation are termed as stereoisomers. (ii) Stereoisomers- On the contrary, the stereoisomer of a molecule will have the same connectivity but differ in orientation in space. They can be further classified into chain, position and functional groups isomers. (i) Constitutional Isomers- These isomers have the same parts but differ in connectivity. Isomers can be generally classified into two types. These compounds also differ in their physical and chemical properties. In simple terms, they have the same constituents but differ in structure and characteristics. This scenario represents the presence of ring flipping in 1,4-dimethylcyclohexane.Isomerism refers to the existence of compounds that have the same formula but different structure. On the other hand in the cis form, the methyl groups are already in the axial position. Out of both stereoisomer examples, the trans form is the stable one because here both the methyl groups are in an equatorial position which somehow reduces the 1,3-diaxial repulsions. These stereoisomer examples have the planar conformation and show a chair-like structure. (S)-thalidomide and (R)-thalidomide stereoisomer examples Cis-1,4-dimethylcyclohexane and trans-1,4-dimethylcyclohexane stereoisomer examplesīoth of the above-mentioned cis and trans stereoisomer examples show some amount of conformation.D-(+)-Limonene and L-(-)-Limonene stereoisomer examples.L-Isoascorbic acid and D-Isoascorbic acid stereoisomer examples.L-ascorbic acid and D-ascorbic acid stereoisomer examples.D-amino acid and L-amino acid stereoisomer examples.D-tartaric acid and L-Tartaric acid stereoisomer examples.L-cysteine and D-cysteine stereoisomer examples.D-Glucose and L-Glucose stereoisomer examples.L-Glyceraldehyde and D-glyceraldehyde stereoisomer examples.L-(+)-alanine and D-(-)-alanine stereoisomer examples.L-(+)-Lactic acid and D-(-)-Lactic acid stereoisomer examples.cis-Dichloroethene and trans-Dichloroethene stereoisomer examples.Cis-1,4-dimethylcyclohexane and trans-1,4-dimethylcyclohexane stereoisomer examples.Various stereoisomer examples along with their types are discussed below: Stereoisomer examples are further divided into 2 types based on reflection namely enantiomers and diastereomers. Stereoisomer examples or spatial isomerism as the name suggests can be defined as the molecule which has the same molecular formula and arrangement but differs in terms of their orientation in 3-D space.
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