Thekey differencebetween methyl and methylene group is that the甲基包含一个carbonatom bonded to threehydrogenatoms whereas the methylene group contains one carbon atom bonded to two hydrogen atoms.
Methyl group and methylene group are importantfunctional groupsin organic molecules. These functional groups form from methane molecules. The chemical structure of the methyl group is CH3– while the chemical structure of the methylene group is CH2-。
CONTENTS
1.Overview and Key Difference
2.What is a Methyl Group
3.什么是亚甲基
4.Side by Side Comparison – Methyl vs Methylene Group in Tabular Form
5.概括
What is a Methyl Group?
Methyl group is a functional group in an organic compound, and it has the chemical formula CH3-。This functional group is derived from the methane molecule, CH4. We can abbreviate this group as “Me”. Furthermore, the methyl group contains one carbon atom bonded to three hydrogen atoms. Also, this is a hydrocarbon group that occurs in organic molecules. In most of the molecules, this is a very stable functional group.
Generally, the methyl group occurs as a part of a large organic compound. This functional group can exist in three different ways: as an anion, a cation or as a radical. The anion of the methyl group has eight valence electrons. The cation has six valence electrons, and the radical has seven valence electrons. However, all three forms are reactive and cannot be observed as individual species.
Figure 01: Methyl Group in Different Forms in Different Compounds
当考虑其反应性时，通常往往没有反应。例如，当甲基在有机化合物中时，甲基也不会受到浓酸的影响。但是，其反应性取决于相邻的取代基。甲基的氧化在工业应用中很重要。源自甲基氧化的产物包括酒精，醛和羧酸基团。例如，锰酸盐（强氧化剂）可以将甲基氧化成羧酸基团。
什么是亚甲基?
Methylene group is a functional group in organic compounds and it has the chemical formula CH2-。所表示的化学公式,这个组织p has a carbon atom bonded to two hydrogen atoms. Generally, this functional group is abbreviated as CH2<因为亚甲基可以形成另外两个由<符号表示的共价键。
Figure 02: A Methylene Group containing an Organic Compound
However, this group does not bind with the organic compound via a double bond; it only forms two single bonds. If there is a double bond, then we call this functional group as “methylidene group”.
What is the Difference Between Methyl and Methylene Group?
Methyl group and methylene group are important functional groups in organic molecules. The key difference between methyl and methylene group is that the methyl group contains one carbon atom bonded to three hydrogen atoms whereas the methylene group contains one carbon atom bonded to two hydrogen atoms. Moreover, the chemical structure of methyl group is CH3– and the chemical structure of methylene group is CH2-。
Below infographic summarizes the differences between methyl and methylene group.
概括– Methyl vs Methylene Group
Methyl group and methylene group are important functional groups in organic molecules. The key difference between methyl and methylene group is that the methyl group contains one carbon atom bonded to three hydrogen atoms whereas the methylene group contains one carbon atom bonded to two hydrogen atoms.
Reference:
1. Helmenstine, Anne Marie. “Methyl Group Definition in Chemistry.” ThoughtCo, Feb. 11, 2020,Available here.
2. “Methyl Group.” Encyclopædia Britannica, Encyclopædia Britannica, Inc., 21 Nov. 2018,Available here.
Image Courtesy:
1. “Methyl Group General Formulae V” By Jü – Own work (Public Domain) viaCommons Wikimedia
2. “1,6-diaminohexane-3D-balls” By Ben Mills – Own work (Public Domain) viaCommons Wikimedia
发表评论