Conjugated system - Wikipedia
网页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.
2.4: 2.4 Conjugated Pi Bond Systems - Chemistry LibreTexts
网页A conjugated system is a system of connected p-orbitals with delocalized electrons in compounds with alternating single and multiple bonds, which in general may lower the overall energy of the …
Conjugated system | Polyenes, Aromaticity, Cyclic Compounds
网页Conjugated system, in a covalent chemical compound, a group or chain of atoms bearing valence electrons that are not engaged in single-bond formation and that modify the behaviour of each other. If, for example, a carbonyl group (C ∶ O) and a hydroxyl group (OH) are widely separated in a molecule,
14.1: Conjugation - Chemistry LibreTexts
网页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.
21.9: Conjugated Systems - Chemistry LibreTexts
网页2023年7月30日 · Since these correspond to Lewis formulas of alternating double and single bonds, they can also be regarded as conjugated systems containing delocalized electrons. Experimentally we find that the more benzene rings a molecule contains, the longer the wavelengths at which it absorbs:
共轭体系 - 百度百科
网页如果与 π键 相连的某一原子具有一个与π键相平行的p轨道，那么这个p轨道就可以和π键 离域，形成p-π共轭体系。. 例如：. CH2=CH-O-CH3；CH2=CH-NH-CH3；CH2=CH-Cl. （3）超共轭体系. 超共轭效应 是由σ（Csp3-H1s）键参与的 共轭效应，分为σ-π超共 …
共轭体系 - 维基百科，自由的百科全书
网页共轭体系 在 单键 、 双键 相互交替（以及其他类型）的共轭体系中，由于分子中原子间特殊的相互影响，使分子更加稳定，内能更小键长趋于平均化的效应。. 如 苯 分子中由于相邻的 π键 电子轨道的交迭而形成共轭，使其六个碳-碳键的键长均为1.39埃。. 这是 ...
Conjugation And Resonance In Organic Chemistry
网页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.
Chapter 8: Conjugated compounds and aromaticity
网页Chapter 8: Conjugated compounds and aromaticity. 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).
Conjugated Double Bonds - Conjugated Systems and Conjugated …
网页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.