Video: Puas yog Solvolysis sn1 lossis sn2?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A solvolysis tshuaj tiv thaiv yog ib SN1 cov tshuaj tiv thaiv qhov twg cov kuab tshuaj ua raws li ib tug nucleophile. Rau SN1 kev daws teeb meem cov tshuaj tiv thaiv, koj tuaj yeem tau txais ob yam khoom stereochemical, inversion & tuav ntawm stereochemistry.
Tib neeg kuj nug, yog Solvolysis ib sn1?
Solvolysis yog ib hom kev hloov pauv nucleophilic (SN1) / (SN2) los yog tshem tawm, qhov twg cov nucleophile yog cov kuab tshuaj molecule. Yam ntxwv ntawm SN1 cov tshuaj tiv thaiv, solvolysis ntawm ib tug chiral reactant them rau racemate.
Tsis tas li ntawd, Solvolysis txhais li cas? Solvolysis , ib qho tshuaj lom neeg cov tshuaj tiv thaiv uas cov kuab tshuaj, xws li dej los yog cawv, yog ib qho ntawm cov reagents thiab muaj ntau tshaj qhov xav tau rau cov tshuaj tiv thaiv. Cov kuab tshuaj ua los yog tsim cov electron-nplua nuj atoms los yog pawg ntawm atoms (nucleophiles) uas txav ib lub atom los yog pab pawg neeg nyob rau hauv lub substrate molecule.
Tsis tas li ntawd, dab tsi txiav txim siab sn1 lossis sn2?
1) Lub substrate (aka electrophile): Rau SN 2 cov tshuaj tiv thaiv, thawj substrate yog zoo dua, thaum lub tertiary substrate yog zoo unreactive. Tab sis rau SN1 cov tshuaj tiv thaiv, nws yog qhov opposite. SN1 cov tshuaj tiv thaiv tsis xav tau muaj zog nucleophile. Yog li ntawd, muaj zog nucleophile nyiam SN 2 , thaum lub zog nucleophile tso cai rau SN1.
Puas yog methanol sn1 lossis sn2?
Cov ntaub ntawv qhia Sn2 , tsuas yog rau cov kuab tshuaj. Methanol yog ib tug polar protic hnyav, uas yog zoo rau ib tug Sn1 tshuaj tiv thaiv. Txawm li cas los xij, muab qhov xwm txheej ntawm substrate thiab nucleophile (ob leeg zoo rau Sn2 ), qhov hnyav yuav tsis yog qhov tseem ceeb.
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