Video: Koj npe R thiab S compound li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Stereocenters tau sau npe R los yog S
Cov nomenclature "sab tes" thiab "sab laug" yog siv rau npe cov enantiomers ntawm ib tug chiral compound . Cov stereocenters tau sau npe ua R los yog S . Xav txog thawj daim duab: tus xub nkhaus yog kos los ntawm qhov tseem ceeb tshaj plaws (1) hloov mus rau qhov tseem ceeb tshaj plaws (4) hloov pauv.
Tib neeg kuj nug, koj ua li cas txiav txim siab qhov tseem ceeb rau R thiab S?
Yog tias peb pawg projecting rau koj raug txiav txim siab tshaj plaws qhov tseem ceeb (#1) rau qis tshaj qhov tseem ceeb (#3) clockwise, ces lub configuration yog " R ”. Yog tias peb pawg projecting rau koj raug txiav txim siab tshaj plaws qhov tseem ceeb (#1) rau qis tshaj qhov tseem ceeb (#3) counterclockwise, ces lub configuration yog " S ”.
Tsis tas li ntawd, qhov txawv ntawm R thiab S isomers yog dab tsi? Tus yuam sij Qhov sib txawv ntawm R thiab S configuration yog tias R configuration yog qhov kev npaj ntawm spatial R yog isomer , uas muaj nws tus txheeb ze kev taw qhia ntawm qhov tseem ceeb tshaj plaws hauv a clockwise kev taw qhia whereas S configuration yog qhov kev npaj ntawm spatial Ib isomer uas muaj nws tus txheeb ze kev taw qhia ntawm qhov kev txiav txim ua ntej hauv ib
Tsis tas li ntawd, R thiab S configuration yog dab tsi?
Cov R / S system yog ib qho tseem ceeb nomenclature system rau denoting enantiomers. Txoj hauv kev no sau txhua qhov chaw chiral R los yog S raws li ib qho system uas nws cov neeg hloov pauv yog txhua tus muab qhov tseem ceeb, raws li Cahn-Ingold-Prelog cov cai tseem ceeb (CIP), raws li tus lej atomic.
R thiab S configuration yog dab tsi?
Cahn-Ingold-Prelog system yog cov txheej txheem kev cai uas tso cai rau peb los txiav txim siab tsis meej txog cov tshuaj stereochemical. kev teeb tsa ntawm txhua lub stereocenter, siv cov npe ' R ' (los ntawm Latin rectus, txhais tau tias sab xis) lossis ' S ' (los ntawm Latin sinister, txhais tau tias sab laug).
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