Qhov sib txawv tseem ceeb ntawm cov pa roj carbon monoxide thiab chiral carbon yog tias cov pa roj carbon monoxide tseem ceeb muaj cov pab pawg hydroxyl uas yog cis lossis hloov mus rau exocyclic oxygen atom, qhov chiral carbon atom tseem ceeb muaj plaub pawg ua haujlwm sib txawv txuas nrog. nws nrog ib daim ntawv cog lus.
Anomeric carbon yog cov pa roj carbon tsim los ntawm carbonyl carbon compound ntawm qhib-chain daim ntawv ntawm cov carbohydrate molecule. Chiral carbon atoms yog cov pa roj carbon atom uas muaj plaub daim ntawv cog lus rau plaub pawg ua haujlwm sib txawv.
Anomeric Carbon yog dab tsi?
Anomeric carbon yog cov pa roj carbon monoxide tau los ntawm carbonyl carbon compound ntawm qhib cov saw hlau ntawm cov carbohydrate molecule. Raws li cov qauv tshuaj ntawm anomeric carbon-muaj cov tebchaw, muaj ob hom xws li alpha anomers thiab beta anomers.
Alpha anomer yog kev teeb tsa ntawm cov carbohydrate uas pawg hydroxyl yog cis rau exocyclic oxygen ntawm qhov chaw anomeric. Qhov ntawd txhais tau hais tias pawg hydroxyl thiab cov exocyclic oxygen atom yog nyob rau tib sab ntawm molecular projection. Thaum peb kos ib lub mis Haworth, pawg hydroxyl yog nyob rau hauv downward yog hais tias nws yog alpha anomer. Cov piv txwv hauv qab no qhia txog alpha anomer ntawm D-glucopyranose.
Daim duab 01: Alpha thiab Beta Anomers
Beta anomer yog qhov teeb tsa ntawm cov carbohydrate uas cov pab pawg hydroxyl hloov mus rau exocyclic oxygen ntawm qhov chaw anomeric. Qhov ntawd txhais tau hais tias pawg hydroxyl thiab cov exocyclic oxygen atom yog nyob rau sab nraud ntawm molecular projection.
Chiral Carbon yog dab tsi?
Chiral carbon atoms yog carbon atoms uas muaj plaub ib daim ntawv cog lus rau plaub pawg ua haujlwm sib txawv. Lub tswv yim ntawm lub xub ntiag ntawm chiral carbon yog qhov zoo tshaj plaws piav qhia los ntawm chirality. Chirality hais txog cov cuab yeej uas muaj daim iav superposable. Lo lus no feem ntau yog siv nrog cov organic tebchaw. Lub ntsiab lus uas txiav txim siab qhov muaj lossis tsis muaj chirality nyob rau hauv ib lub molecule yog lub chiral centre ntawm cov molecule. Chiral centre yog cov pa roj carbon atom ntawm cov organic compound uas muaj plaub qhov sib txawv sib txawv txuas rau nws. Chiral compounds yog cov tshuaj uas muaj chiral carbon atoms. Chirality yog qhov tseeb ntawm kev muaj chiral centres. Lub chaw chiral yog qhov tseem ceeb sp3 hybridized vim tias nws yuav tsum tau dais plaub pawg sib txawv ntawm cov atoms, tsim plaub daim ntawv cog lus ib leeg.
Daim duab 02: Chiral Carbon Atoms qhia nrog xiav xim hnub qub
Chiral cov chaw ua rau qhov kho qhov muag isomerism ntawm cov tebchaw. Hauv lwm lo lus, cov tebchaw muaj cov chaw chiral tsis suav nrog lawv daim iav duab. Yog li ntawd, cov tebchaw uas muaj qhov chaw chiral thiab cov molecule uas zoo li nws daim iav yog ob qhov sib txawv. Ua ke, ob lub molecules no hu ua enantiomers.
Ntawm qhov tod tes, lo lus achiral txhais tau hais tias tsis muaj chiral chaw nyob. Yog li ntawd, ib tug chiral compound tsis muaj symmetry. Txawm li cas los xij, nws muaj daim iav uas tsis yog superimposable. Txij li thaum tsis muaj chiral chaw hauv achiral compounds, ib qho achiral compound muaj cov duab iav superimposable.
Qhov txawv ntawm Anomeric Carbon thiab Chiral Carbon yog dab tsi?
Anomeric compounds thiab chiral compounds yog ob hom kev sib txawv ntawm cov organic tebchaw uas muaj qee hom carbon atoms. Qhov sib txawv tseem ceeb ntawm cov pa roj carbon monoxide thiab chiral carbon yog tias cov pa roj carbon atom yog qhov tseem ceeb muaj cov pab pawg hydroxyl uas yog cis lossis trans mus rau exocyclic oxygen atom, qhov chiral carbon atom tseem ceeb muaj plaub pawg ua haujlwm sib txawv txuas rau nws nrog ib daim ntawv cog lus..
Cov hauv qab no qhia txog qhov sib txawv ntawm cov pa roj carbon monoxide thiab chiral carbon hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Anomeric Carbon vs Chiral Carbon
Anomeric compounds thiab chiral compounds yog ob hom kev sib txawv ntawm cov organic tebchaw uas muaj qee hom carbon atoms. Qhov sib txawv tseem ceeb ntawm cov pa roj carbon monoxide thiab chiral carbon yog tias cov pa roj carbon atom yog qhov tseem ceeb muaj cov pab pawg hydroxyl uas yog cis lossis trans mus rau exocyclic oxygen atom, qhov chiral carbon atom tseem ceeb muaj plaub pawg ua haujlwm sib txawv txuas rau nws nrog ib daim ntawv cog lus..
