Video: Koj muab RS teeb tsa li cas rau Fischer projection?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog hais tias lub nkhaus mus clockwise, lub kev teeb tsa yog R; yog hais tias tus nkhaus mus counterclockwise, lub kev teeb tsa yog S. Kom tau tus lej-plaub qhov tseem ceeb hloov pauv nyob rau sab saum toj Fischer projection , koj yuav tsum siv ib qho ntawm ob qhov kev tso cai txav diagramed hauv daim duab thib ob.
Cov lus nug tseem yog, koj ua li cas muab R thiab S teeb tsa?
Tom qab tag nrho koj cov neeg hloov pauv tau ua qhov tseem ceeb hauv qhov raug, tam sim no koj tuaj yeem sau npe / sau npe rau cov molecule R los yog S . Muab qhov tseem ceeb tshaj plaws hloov pauv hauv qab (dashed kab). Txiav txim seb qhov kev taw qhia ntawm 1 mus rau 2 mus rau 3 clockwise los yog counterclockwise.
Ib tug kuj yuav nug, koj tuaj yeem qhia tau li cas yog tias Fischer projection yog chiral? Ua ib Fischer projection , koj saib a chiral nruab nrab kom ob tug neeg hloov pauv tuaj tawm ntawm lub dav hlau ntawm koj, thiab ob tus neeg hloov pauv rov qab mus rau hauv lub dav hlau, raws li qhia hauv qab no. Ces tus chiral center ua tus ntoo khaub lig Fischer projection . Txhua tus hla ntawm a Fischer projection yog a chiral chaw.
Ib yam li ntawd, koj ua li cas los ntawm Fischer projection mus rau daim ntawv cog lus?
Hloov ua lwm yam Fischer projection rau a daim ntawv cog lus formula koj tsuas yog kos ib zig-zag kab ntawm 6 carbon atoms. Tom qab ntawd koj muab ib pawg aldehyde ntawm C-1 thiab OH pawg ntawm txhua tsib carbon atoms. Nco ntsoov tias cov daim ntawv cog lus formula muab tsis muaj cov ntaub ntawv stereochemical.
Dab tsi yog qhov txawv ntawm enantiomers thiab diastereomers?
Muaj ob hom stereoisomers- enantiomers thiab diastereomers . Enantiomers muaj chiral cov chaw uas yog daim iav duab thiab tsis-superimposable. Cov neeg txom nyem muaj chiral cov chaw uas tsis yog superimposable tab sis tsis yog daim iav duab. Muaj peev xwm muaj ntau tshaj 2 nyob ntawm seb muaj pes tsawg tus stereocenters.
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