What is Optical Isomerism?

Optical Isomerism is a kind of stereoisomerism which occurs when molecules are mirror images of one another but are not superimposable, despite sharing the same molecular and structural formulas. Because of their chiral centre, these molecules are also referred to as chiral molecules.

Optical Isomerism Definition

Optical Isomerism is defined as the property of organic compounds in which they have same molecular and structural formula but have non-superimposable images

Significance of Optical Isomerism in Chemistry

Optical isomerism is significant in substances that rotate the plane of polarized light, and the amount of rotation is dependent on various factors such as the concentration of the substance in the solution, the path length of the sample tube, the wavelength of the incident light, and the nature of the substance itself.

Optical Isomerism Example

One of the example of Optical isomerism is Butan-2-ol where the four carbons can be arranged in 3D space in two ways such as they are mirror image of each other and also non-superimposable.

Optical Isomerism

Optical Isomerism is a property of Organic Compounds in which they have the same molecular and structural formula but they can’t superimpose on each other. This is due to the different arrangement of carbon atoms in three-dimensional space. The structures exhibiting Optical isomerism are called Optical Isomers. Optical Isomerism is one of the most important concepts in Organic Chemistry and helps to understand various difficult reactions.

In this article, we will learn what is optical isomerism, its significance, types, examples and many more things.

Table of Content

  • What is Optical Isomerism?
  • Optical Isomer Definition
  • Chiral and Achiral Molecules
  • What are Enantiomers?
  • Type of Optical Isomers
  • Structural Isomers vs Optical Isomers

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What is Optical Isomerism?

Optical Isomerism is a kind of stereoisomerism which occurs when molecules are mirror images of one another but are not superimposable, despite sharing the same molecular and structural formulas. Because of their chiral centre, these molecules are also referred to as chiral molecules....

Optical Isomer Definition

An optical isomer, is a stereoisomer that is non-superimposable onto its own mirror image. They are also known as antipodes or optical antipodes....

Chiral and Achiral Molecules

Chilarity is an important geometric property of a molecule’s symmetry. On this basis, molecules are divided into two types which are:...

What are Enantiomers?

Enantiomers are non-superimposable mirror images of each other, much like a person’s right and left hands. They are often compared to hands because, without mirroring, one cannot be superimposed onto the other....

Examples of Enantiomers

The two examples of Enantiomers are:...

Types of Optical Isomers

Compounds showing optical isomers can be distinguished mainly into two types, which are:...

Optical Isomers in Coordination Compounds

There are three types of optical isomers in coordination compounds:...

Structural Isomers vs Optical Isomers

Structural and optical isomers are two types of stereoisomers that differ in their arrangement in three-dimensional space. Here are the main differences between them:...

Explain Optical Isomerism in 2-Chlorobutane

Optical isomerism in 2-chlorobutane results from a chiral centre at the second carbon atom, which has four groups attached. Due to this, 2-chlorobutane exhibits optical isomerism and has two enantiomers. The spatial arrangement of the four different groups (chlorine, hydrogen, and methyl) around the chiral atom is different in the two enantiomers. The structure of 2-chlorobutane and its mirror image cannot superimpose perfectly, making the compound optically active....

Explain Optical Isomerism in Butan-2-ol

In butan-2-ol, the second carbon atom has a hydroxy group, an ethyl group, a methyl group, and a hydrogen attached, making it an asymmetric carbon atom. This results in the molecule having two optical isomers, also known as enantiomers. To identify the optical isomers of butan-2-ol, consider the following skeletal formula:...

Applications of Optical Isomerism

Here are some of the critical applications:...

Optical Isomerism – FAQs

1. What is Optical Isomerism?...

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