Video: EZ system yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tus R-S qhov system yog raws li cov txheej txheem ntawm "kev cai tseem ceeb", uas tso cai rau koj los txheeb xyuas txhua pab pawg. Lub IUPAC nruj qhov system rau npe alken isomers, hu ua E-Z system , yog ua raws li cov cai tseem ceeb tib yam. Cov kev cai tseem ceeb no feem ntau hu ua Cahn-Ingold-Prelog (CIP) cov cai, tom qab cov kws tshuaj uas tsim cov qhov system.
Tib neeg kuj nug, EZ isomerism yog dab tsi?
Stereoisomerism tshwm sim thaum cov khoom muaj tib lub qauv molecular, tab sis kev sib txawv ntawm lawv cov atoms hauv qhov chaw. E-Z isomerism yog ib hom ntawm no isomerism . Nws siv rau: alkenes thiab lwm cov organic tebchaw uas muaj C = C bonds. cyclic alkanes.
Tsis tas li ntawd, qhov txawv ntawm E thiab Z isomers yog dab tsi? Hauv tsab ntawv E , kab rov tav strokes tag nrho ntawm tib sab; hauv E isomer , cov pab pawg tseem ceeb dua nyob rau sab nraud. Hauv tsab ntawv Z , kab rov tav strokes ntawm opposite sab; hauv isomer Z , cov pab pawg nyob rau tib sab.
Tsis tas li ntawd, EZ stereochemistry yog dab tsi?
E-Z configuration, los yog E-Z convention, yog IUPAC nyiam txoj kev piav qhia txog qhov tseeb stereochemistry ntawm ob daim ntawv cog lus hauv organic chemistry. Ua raws li Cahn-Ingold-Prelog cov cai tseem ceeb (CIP cov cai), txhua qhov hloov pauv ntawm ob daim ntawv cog lus tau muab qhov tseem ceeb.
E thiab Z sawv cev rau dab tsi hauv chemistry?
Rau alkene lossis cycloalkane nrog E-Z isomers, E txhais tau hais tias ob pawg nrog qhov tseem ceeb dua ntawm ob C atoms rau ob daim ntawv cog lus yog nyob rau sab nraud; sib piv, Z txhais tau hais tias ob pawg nrog qhov tseem ceeb dua ntawm ob daim ntawv cog lus C atoms nyob rau tib sab.
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