Qhov sib txawv tseem ceeb ntawm Fischer qhov projection thiab Haworth qhov projection yog tias Fischer qhov projection qhia cov qauv qhib ntawm cov organic molecules, hos Haworth projection qhia cov qauv kaw-cyclic ntawm cov organic molecules.
Fischer projection thiab Haworth projection yog ob txoj hauv kev uas qhia cov qauv molecular ntawm cov organic molecules.
Fischer Projection yog dab tsi?
Fischer qhov projection yog 2D sawv cev ntawm cov organic molecule los ntawm kev kwv yees. Cov qauv no tau qhia los ntawm Emil Fischer hauv xyoo 1891. Hom kev kwv yees no muaj txiaj ntsig zoo rau kev piav qhia ntawm carbohydrates. Yog li, cov qauv no tsuas yog siv hauv cov organic chemistry thiab biochemistry. Txawm li cas los xij, Fischer qhov kev kwv yees ntawm cov tshuaj tsis yog organic tsis tshua muaj vim tias cov qauv no tuaj yeem ua rau tsis meej pem nrog lwm cov qauv.
Daim duab 01: Ib qho piv txwv ntawm Fischer Projection
Thaum kos duab Fischer qhov project, peb tuaj yeem muab tag nrho cov nyiaj tsis yog lub davhlau ya nyob twg ua kab rov tav lossis ntsug. Peb yuav tsum qhia cov saw hlau vertically, tab sis peb feem ntau tsis qhia cov pa roj carbon atoms. Yog li ntawd, peb tuaj yeem sawv cev cov pa roj carbon atom los ntawm qhov nruab nrab ntawm cov kab hla, raws li pom hauv daim duab saum toj no. Qhov no ua rau kev taw qhia ntawm thawj carbon atom nyob rau sab saum toj. Ntawm qhov tod tes, kab rov tav daim ntawv cog lus ntawm qhov projection qhia lwm qhov kev sib txuas ntawm carbon atoms thiab lwm yam atoms hauv cov molecule.
Yog tias peb tab tom tsim Fischer qhov projection rau monosaccharide (muaj ntau dua peb cov pa roj carbon atom), tsis muaj kev taw qhia tshwj xeeb ntawm cov molecule nyob rau hauv qhov chaw, yog li tag nrho cov kab rov tav daim ntawv cog lus ntawm ob txoj hauj lwm carbon yog slanted mus rau lub tus saib. Tsis tas li ntawd, kev sib hloov ntawm cov molecule yuav tsum tau ua kom tiav daim duab ntawm Fischer projection ntawm lub molecule.
Feem ntau, Fischer qhov projection tsis yog tus sawv cev ntawm qhov tseeb 3D qauv ntawm cov molecule. Yog li ntawd, peb tuaj yeem hais tias qhov no yog qhov hloov pauv ntawm cov molecule, uas yog qhov zoo tshaj plaws twisted ntawm ntau theem raws tus txha caj qaum ntawm cov molecule.
Haworth Projection yog dab tsi?
Haworth projection yog ib txoj hauv kev los kos cov qauv ntawm cov organic molecule sawv cev rau cov qauv cyclic ntawm monosaccharides hauv 3D foundations. Peb tuaj yeem siv qhov projection no los muab cov qauv qauv ntawm cov molecule. Cov cheeb tsam loj uas siv hom kev ntsuas no yog biochemistry thiab chemistry.
Daim duab 02: Ib qho piv txwv ntawm Haworth Projection
Qhov kev kwv yees no tau raug hu ua tus kws tshuaj tshuaj Norman Haworth. Cov yam ntxwv ntawm Haworth projection suav nrog kev siv cov pa roj carbon raws li hom atom implicit, kev siv hydrogen atoms implicit ntawm cov pa roj carbon atom, thiab siv cov kab tuab los qhia cov atoms uas nyob ze rau cov neeg soj ntsuam. Tsis tas li ntawd, cov atoms ntawm sab xis ntawm Fischer qhov projection yog muab los ntawm cov pab pawg hauv qab lub dav hlau ntawm lub nplhaib hauv Haworth projection.
Qhov txawv ntawm Fischer Projection thiab Haworth Projection yog dab tsi?
Fischer qhov projection yog 2D sawv cev ntawm cov organic molecule los ntawm kev kwv yees. Haworth projection yog ib txoj hauv kev los kos cov qauv ntawm cov organic molecule sawv cev rau cov qauv cyclic ntawm monosaccharides hauv 3D foundations. Qhov sib txawv tseem ceeb ntawm Fischer qhov projection thiab Haworth qhov projection yog tias Fischer qhov projection qhia qhov qhib saw qauv ntawm cov organic molecules, whereas lub Haworth projection qhia lub kaw-cyclic qauv ntawm cov organic molecules.
Cov hauv qab no infographic teev qhov sib txawv ntawm Fischer qhov projection thiab Haworth qhov projection hauv daim ntawv teev npe rau ib sab ntawm kev sib piv.
Summary – Fischer Projection vs Haworth Projection
Fischer qhov projection yog 2D sawv cev ntawm cov organic molecule los ntawm qhov projection, thaum Haworth projection yog ib txoj hauv kev los kos cov qauv ntawm cov organic molecule sawv cev rau cov qauv cyclic ntawm monosaccharides hauv 3D foundations. Qhov sib txawv tseem ceeb ntawm Fischer qhov projection thiab Haworth qhov projection yog tias Fischer qhov projection qhia qhov qhib saw qauv ntawm cov organic molecules, whereas lub Haworth projection qhia lub kaw-cyclic qauv ntawm cov organic molecules.
