Key Difference – Alicyclic vs Aromatic Compounds
Based on the nature of the carbon skeleton, organic compounds are broadly classified into four categories namely, a)脂肪族b) alicyclic, c) aromatic, and d)heterocyclic compounds。脂肪族化合物具有单个或多个碳键，但没有循环结构。通过通过A连接两个脂肪族链的碳原子来形成Alicyclic化合物covalent bondresulting in a cyclic structure. Aromatic compounds are also cyclic, but the bonds are delocalized. Heterocyclic compounds can be either alicyclic or aromatic, but the ring contains one or more hetero atoms. This article focuses on the difference between alicyclic and aromatic compounds. Thekey difference在Alicyclic和芳香化合物之间是alicyclic compounds are cyclic compounds yet resemble the aliphatic compounds in their properties, whereas aromatic compounds have conjugated rings and show aromaticity as the main property.In addition, there are many differences that exist between these two group of compounds and they are discussed below.
What are Alicyclic Compounds?
Alicyclic化合物也称为环化合物化合物。这些化合物可能是saturated or unsaturated。Due to ringed-structure, aliphatic compounds show stereochemical properties. These properties are however absent in aliphatic compounds.
一些重要的天然化合物，例如类固醇，萜类化合物和许多生物碱含有甲环绕化合物。环丙烷和cyclohexaneare the simplest alicyclic compounds.
芳香族化合物的有机化合物conjugated rings. Double and single bonds are alternatively arranged to form the cyclic structure.苯是C的化学式的最简单芳香化合物6H6。Because of the delocalized bonds and conjugated ringed-structure, aromatic compounds exhibit properties (aromaticity) that are different from aliphatic and alicyclic compounds.
There are certain important characteristics of aromatic compounds owing to their aromaticity. According to the chemical formula, aromatic compounds show a high degree of unsaturation. However, these compounds are less likely to undergo addition reactions unlike their corresponding unsaturated aliphatic compounds and instead they prefer to undergosubstitution reactions。The molecules of aromatic compounds are more thermodynamically stable as they show low heats of combustion and hydrogenation. According to X-ray and electron diffraction methods, the molecules of aromatic compounds are flat.
The name ‘aromatic’ emerged from the Greek word aroma, meaning pleasant smell, is used to these compounds as most of these compounds have pleasant odors. Some examples of aromatic compounds include phenol, naphthalene, anthracene etc.
What is the Difference Between Alicyclic and Aromatic Compounds?
Alicyclic vs Aromatic
|Alicyclic compounds are organic compounds formed by the joining of two carbon atoms of an aliphatic chain through a covalent bond.||Aromatic compounds are organic compounds with conjugated rings in an alternative arrangement of double and single bonds resulting aromaticity.|
|Alicyclic化合物具有可能饱和或不饱和的闭环。||Aromatic compounds have closed ring with high degree of unsaturation.|
|如果存在多个键，则型号化合物会经历加法反应。||Aromatic compounds undergo substitution reactions, and less likely to undergo addition reactions.|
|Nature of Properties|
|Alicyclic化合物类似于脂肪族化合物的特性||Aromatic compounds resembles aromaticity due to delocalized bonds.|
|Most of the alicyclic compounds do not have pleasant smell||Most of the aromatic compounds have pleasant smell|
|环丙烷，环己烷，类固醇等||苯, phenol, naphthalene, anthracene|
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3.“ Alicyclic化合物和芳香化合物。”竞争科学愿景，2002年7月。Available here