Compare the Difference Between Similar Terms

Difference Between

Home / Science & Nature / Science / Chemistry / Organic Chemistry / What is the Difference Between Conjugated and Isolated Double Bond

What is the Difference Between Conjugated and Isolated Double Bond

August 25, 2021 Posted by Madhu

The key difference between conjugated and isolated double bond is that conjugated double bond refers to an organic structure having alternating double bonds and single bonds, whereas isolated double bond refers to an organic structure where there are no alternating double and single bonds and the double bonds are in a random arrangement.

The term double bond in chemistry refers to a structure where two atoms are bonded to each other through a sigma bond and a pi bond. In organic chemistry, double bonds are an important feature in organic compounds where there is a sigma bond and a pi bond between two carbon atoms.

CONTENTS

1. Overview and Key Difference
2. What is Conjugated Double Bond 
3. What is Isolated Double Bond
4. Conjugated vs Isolated Double Bond in Tabular Form
5. Summary – Conjugated vs Isolated Double Bond

What is Conjugated Double Bond?

Conjugated double bonds are two or more double bonds that are separated by single bonds. In other words, if there are more than two double bonds in a chemical structure, these double bonds are arranged in an alternating pattern with the single bonds.

Conjugated and Isolated Double Bond - Side by Side Comparison

A conjugated system of double bonds and single bonds cause the formation of a conjugated system having delocalized electrons. This means the conjugated system has electrons spread throughout the conjugated system rather than existing in fixed positions on the double bond. This is called delocalization. This delocalization usually lowers the energy level of the structure, thereby increasing the stability of the structure. Conjugated double bonds can occur in ring structures, acyclic structures, linear structures, or mixed structures having cyclic and linear structures.

Conjugated vs Isolated Double Bond in Tabular Form

The term conjugation refers to the mixing or overlapping of p orbitals of one atom with another p orbital in an adjacent sigma bond. Therefore, a conjugated system has a region where p orbitals overlap with each other.

What is Isolated Double Bond?

An isolated double bond is a chemical bond that is made of a sigma bond and a pi bond. Usually, this term is used when the double bonds in an organic structure are not arranged in an alternating pattern with the single bonds. In other words, isolated double bonds have two or more single bonds between them and are arranged in a random manner.

Therefore, these double bonds tend to take part in chemical reactions exactly as if there is one double bond in the compound. Here, unlike in conjugated systems, there is no electron delocalization taking place. This is because the double bonds are separated from each other, and there is no possibility for the overlapping of the p orbitals.

What is the Difference Between Conjugated and Isolated Double Bond?

Conjugated and isolated double bonds are two types of double bonds. The key difference between conjugated and isolated double bond is that conjugated double bond means an organic structure having alternating double bonds and single bonds, whereas isolated double bond means an organic structure where there are no alternating double and single bonds and the double bonds are in a random arrangement.

The below infographic lists the differences between conjugated and isolated double bond in tabular form for side by side comparison.

Summary – Conjugated vs Isolated Double Bond

Conjugated and isolated double bonds are two types of double bonds. The key difference between conjugated and isolated double bond is that conjugated double bond means an organic structure having alternating double bonds and single bonds, whereas isolated double bond means an organic structure where there are no alternating double and single bonds and the double bonds are in a random arrangement.

Reference:

1. “14.5: Two NEIGHBORING DOUBLE Bonds: Conjugated Dienes.” Chemistry LibreTexts, Libretexts, 14 July 2020.

Image Courtesy:

1. “1,3-pentadien” By Cäsium137 (D.) – Own work (Original text: selbst erstellt) (Public Domain) via Commons Wikimedia
2. “Diazomethane-pi-system” By Ben Mills – Own work (Public Domain) via Commons Wikimedia

Related posts:

Difference Between Benzene and PhenolDifference Between Benzene and Phenol Difference Between Carbonyl and KetoneDifference Between Carbonyl and Ketone Difference Between Binary Acids and OxyacidsDifference Between Binary Acids and Oxyacids What is SucraloseDifference Between Saccharin and Sucralose Free Radical Substitution vs Free Radical AdditionDifference Between Free Radical Substitution and Free Radical Addition

Filed Under: Organic Chemistry

About the Author: Madhu

Madhu is a graduate in Biological Sciences with BSc (Honours) Degree and currently persuing a Masters Degree in Industrial and Environmental Chemistry. With a mind rooted firmly to basic principals of chemistry and passion for ever evolving field of industrial chemistry, she is keenly interested to be a true companion for those who seek knowledge in the subject of chemistry.

Comments

  1. JOSEPH E says

    November 9, 2021 at 10:52 am

    Thanks so much Madhu

    Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Request Article

Featured Posts

Difference Between Coronavirus and Cold Symptoms

Difference Between Coronavirus and Cold Symptoms

Difference Between Coronavirus and SARS

Difference Between Coronavirus and SARS

Difference Between Coronavirus and Influenza

Difference Between Coronavirus and Influenza

Difference Between Coronavirus and Covid 19

Difference Between Coronavirus and Covid 19

You May Like

Difference Between LCD and LED Monitors

Difference Between Amplifier and Oscillator

Difference Between Amplifier and Oscillator

Difference Between Sri Lanka and Maldives

Difference Between Sri Lanka and Maldives

Difference Between Nitrate of Soda 16-0-0 and Sodium Nitrate 99%

What is the Difference Between Adiabatic and Reversible Adiabatic Process

What is the Difference Between Adiabatic and Reversible Adiabatic Process

Latest Posts

  • What is the Difference Between Lactam and Lactim
  • What is the Difference Between Carbamazepine and Oxcarbazepine
  • What is the Difference Between HTLV 1 and 2
  • What is the Difference Between Bohr Effect and Haldane Effect
  • What is the Difference Between Oxybenzone and Avobenzone
  • What is the Difference Between Flakiness Index and Elongation Index
  • Home
  • Vacancies
  • About
  • Request Article
  • Contact Us

Copyright © 2010-2018 Difference Between. All rights reserved. Terms of Use and Privacy Policy: Legal.