Qhov sib txawv tseem ceeb ntawm pawg methyl thiab methylene yog tias pawg methyl muaj ib cov pa roj carbon atom txuas rau peb lub atom hydrogen whereas pawg methylene muaj ib cov pa roj carbon atom sib txuas rau ob lub hydrogen atoms.
Methyl pawg thiab methylene pawg yog cov pab pawg tseem ceeb hauv cov organic molecules. Cov pab pawg ua haujlwm no tsim los ntawm methane molecules. Cov qauv tshuaj ntawm pawg methyl yog CH3- thaum cov qauv tshuaj ntawm pawg methylene yog CH2-.
Methyl Group yog dab tsi?
Methyl pawg yog ib pawg ua haujlwm hauv cov organic compound, thiab nws muaj cov tshuaj formula CH3-. Cov pab pawg ua haujlwm no yog muab los ntawm methane molecule, CH 4Peb tuaj yeem sau cov pab pawg no ua "Kuv". Tsis tas li ntawd, pawg methyl muaj ib cov pa roj carbon atom sib txuas rau peb lub hydrogen atoms. Tsis tas li ntawd, qhov no yog ib pawg hydrocarbon uas tshwm sim hauv cov organic molecules. Hauv feem ntau ntawm cov molecules, qhov no yog ib pab pawg ua haujlwm ruaj khov.
Feem ntau, pawg methyl tshwm sim ua ib feem ntawm cov organic compound loj. Cov pab pawg ua haujlwm no tuaj yeem muaj nyob hauv peb txoj kev sib txawv: raws li anion, cation lossis raws li radical. Cov anion ntawm pawg methyl muaj yim valence electrons. Lub cation muaj rau valence electrons, thiab lub radical muaj xya valence electrons. Txawm li cas los xij, tag nrho peb hom yog reactive thiab tsis tuaj yeem pom raws li tus kheej hom.
Daim duab 01: Methyl Group nyob rau hauv ntau hom ntawv nyob rau hauv sib txawv compounds
Thaum xav txog lawv qhov kev ua haujlwm, nws feem ntau ua rau tsis muaj kev cuam tshuam. Piv txwv li, methyl pawg tsis cuam tshuam los ntawm txawm tias muaj zog acid thaum pawg methyl nyob hauv cov organic compound. Txawm li cas los xij, nws cov reactivity nyob ntawm cov khoom uas nyob ib sab. Cov oxidation ntawm methyl pawg yog qhov tseem ceeb hauv kev siv tshuab. Cov khoom tau muab los ntawm methyl pawg oxidation muaj xws li cawv, aldehyde thiab carboxylic acid pawg. Piv txwv li, permanganate (muaj zog oxidant) tuaj yeem oxidize methyl pawg rau hauv pawg carboxylic acid.
Methylene Group yog dab tsi?
Methylene pawg yog ib pab pawg ua haujlwm hauv cov organic tebchaw thiab nws muaj cov tshuaj formula CH2-. Raws li qhia los ntawm cov tshuaj formula, pawg no muaj cov pa roj carbon atom sib txuas rau ob lub hydrogen atoms. Feem ntau, pab pawg ua haujlwm no yog luv li CH2 < vim tias pawg methylene tuaj yeem tsim ob daim ntawv cog lus ntxiv uas tau sawv cev los ntawm < lub cim.
Daim duab 02: Ib pawg Methylene uas muaj cov Organic Compound
Txawm li cas los xij, pawg no tsis khi nrog cov organic compound ntawm ob daim ntawv cog lus; nws tsuas tsim tau ob daim ntawv cog lus xwb. Yog tias muaj ob daim ntawv cog lus, ces peb hu cov pab pawg ua haujlwm no ua "methylidene pawg".
Qhov txawv ntawm Methyl thiab Methylene Group yog dab tsi?
Methyl pawg thiab methylene pawg yog cov pab pawg tseem ceeb hauv cov organic molecules. Qhov sib txawv tseem ceeb ntawm pawg methyl thiab methylene yog tias pawg methyl muaj ib cov pa roj carbon atom txuas rau peb hydrogen atoms thaum pawg methylene muaj ib cov pa roj carbon atom sib txuas rau ob lub hydrogen atoms. Ntxiv mus, cov qauv tshuaj ntawm methyl pawg yog CH3- thiab cov qauv tshuaj ntawm pawg methylene yog CH2-.
Hauv qab infographic qhia txog qhov sib txawv ntawm pawg methyl thiab methylene.
Summary – Methyl vs Methylene Group
Methyl pawg thiab methylene pawg yog cov pab pawg tseem ceeb hauv cov organic molecules. Qhov sib txawv tseem ceeb ntawm pawg methyl thiab methylene yog tias pawg methyl muaj ib cov pa roj carbon atom sib txuas rau peb hydrogen atoms whereas pawg methylene muaj ib cov pa roj carbon atom sib txuas rau ob lub hydrogen atoms.
