In theoretical chemistry, a conjugated system is a system of connected p-orbitals with delocalized electrons in a molecule, which in general lowers the overall energy of the molecule and increases stability. It is conventionally represented as having alternating single and multiple bonds.

Conjugated double bonds are separated by a single bond. 1,3-dienes are an excellent example of a conjugated system. Each carbon in 1,3 dienes are sp 2 hybridized and therefore have one p orbital. The four p orbitals in 1,3-butadiene overlap to form a conjugated system.

2017年1月24日 · Conjugation is what we call it when 3 or more p orbitals join together into a larger “pi system”. These conjugated pi systems contain electrons, which we often call “pi electrons” to distinguish them from the electrons that comprise single bonds in the molecule.

2023年7月30日 · A similar effect is found for molecules containing several benzene rings. Since these correspond to Lewis formulas of alternating double and single bonds, they can also be regarded as conjugated systems containing delocalized electrons.

2021年12月12日 · Conjugation: Conjugation is the term we use to describe an arrangement of alternating single and double bonds. To explain how conjugated systems behave differently from non-conjugated systems we will compare 1,3-pentadiene (which is conjugated) and 1,4 pentadiene (which is not conjugated).

2011年3月8日 · A full discussion of conjugation is for another time, but “conjugation” is the name we give for the phenomenon where π electrons (that is, “electrons in p orbitals”) can be shared over more than 3 or more atoms. Here’s an example of a conjugated diene and a …

A conjugated system is a molecule’s system of connected p-orbitals with delocalised electrons, which decreases the molecule’s overall energy and promotes stability. It is commonly depicted as having single and multiple bonds that alternate.

By investigating many cyclic conjugated systems, it has been possible to identify the factors that lead to aromaticity. These are known as Huckel’s Rule: Aromatic compounds are planar, cyclic, conjugated, and have 4n+2 π electrons in the π electron cloud.