Qhov sib txawv tseem ceeb ntawm kev sib koom ua ke thiab cais ob daim ntawv cog lus yog qhov sib txuas ob daim ntawv cog lus hais txog cov qauv organic uas muaj kev hloov pauv ob daim ntawv cog lus thiab ib daim ntawv cog lus, qhov kev sib cais ob daim ntawv cog lus hais txog cov qauv organic uas tsis muaj kev hloov pauv ob thiab ib daim ntawv cog lus. thiab ob daim ntawv cog lus yog nyob rau hauv ib qho kev npaj random.
Lo lus ob daim ntawv cog lus hauv chemistry yog hais txog cov qauv uas ob lub atoms sib raug zoo rau ib leeg los ntawm daim ntawv cog lus sigma thiab daim ntawv cog lus pi. Nyob rau hauv cov organic chemistry, ob daim ntawv cog lus yog ib qho tseem ceeb hauv cov organic tebchaw uas muaj sigma daim ntawv cog lus thiab ib daim ntawv cog lus pi ntawm ob lub atoms.
Dab tsi yog Conjugated Double Bond?
Conjugated ob daim ntawv cog lus yog ob lossis ntau dua ob daim ntawv cog lus uas tau sib cais los ntawm ib daim ntawv cog lus. Hauv lwm lo lus, yog tias muaj ntau tshaj ob ob daim ntawv cog lus hauv cov qauv tshuaj, cov nyiaj sib koom ua ke no tau teem rau hauv cov qauv sib hloov nrog cov ntawv cog lus ib leeg.
Ib qho kev sib txuas ntawm ob daim ntawv cog lus thiab ib daim ntawv cog lus ua rau tsim cov kab ke sib txuas uas muaj cov hluav taws xob delocalized. Qhov no txhais tau hais tias lub kaw lus conjugated muaj cov hluav taws xob sib kis thoob plaws hauv cov kab ke sib txuas es tsis yog nyob rau hauv qhov chaw ruaj khov ntawm ob daim ntawv cog lus. Qhov no yog hu ua delocalization. Qhov no delocalization feem ntau txo qis lub zog ntawm cov qauv, yog li ua kom muaj kev ruaj ntseg ntawm cov qauv. Conjugated ob daim ntawv cog lus tuaj yeem tshwm sim hauv cov qauv nplhaib, cov qauv acyclic, cov qauv kab, lossis cov qauv sib xyaw uas muaj cov qauv sib tw thiab cov kab tawm.
Lo lus conjugation yog hais txog kev sib xyaw lossis sib tshooj ntawm p orbitals ntawm ib lub atom nrog lwm tus p orbital hauv ib daim ntawv cog lus uas nyob ib sab. Yog li ntawd, lub kaw lus conjugated muaj thaj tsam uas p orbitals sib tshooj nrog ib leeg.
Dab tsi yog Isolated Double Bond?
Ib qho kev sib cais ob daim ntawv cog lus yog ib daim ntawv cog lus tshuaj uas yog ua los ntawm daim ntawv cog lus sigma thiab daim ntawv cog lus pi. Feem ntau, lo lus no yog siv thaum ob daim ntawv cog lus nyob rau hauv cov qauv organic tsis tau teem caij rau hauv ib qho kev sib hloov nrog cov ntawv cog lus ib leeg. Hauv lwm lo lus, cais ob daim ntawv cog lus muaj ob lossis ntau dua ib daim ntawv cog lus nruab nrab ntawm lawv thiab tau teem caij sib txawv.
Yog li ntawd, ob daim ntawv cog lus no yuav koom nrog cov tshuaj tiv thaiv raws nraim li yog tias muaj ib daim ntawv cog lus ob zaug hauv qhov sib xyaw. Ntawm no, tsis zoo li hauv conjugated systems, tsis muaj electron delocalization tshwm sim. Qhov no yog vim ob daim ntawv cog lus tau sib cais los ntawm ib leeg, thiab tsis muaj qhov ua tau rau qhov sib tshooj ntawm p orbitals.
Qhov txawv ntawm Conjugated thiab cais ob daim ntawv cog lus yog dab tsi?
Conjugated thiab cais ob daim ntawv cog lus yog ob hom ob daim ntawv cog lus. Qhov sib txawv tseem ceeb ntawm kev sib txuas thiab kev sib cais ob daim ntawv cog lus yog qhov sib txuas ob daim ntawv cog lus txhais tau hais tias cov qauv organic uas muaj kev hloov pauv ob daim ntawv cog lus thiab ib daim ntawv cog lus, qhov kev sib cais ob daim ntawv cog lus txhais tau hais tias cov qauv organic uas tsis muaj kev hloov pauv ob thiab ib daim ntawv cog lus thiab ob daim ntawv cog lus yog nyob rau hauv ib qho kev npaj random.
Cov hauv qab no infographic teev qhov sib txawv ntawm kev sib txuas thiab cais ob daim ntawv cog lus hauv daim ntawv teev npe rau ib sab ntawm kev sib piv.
Summary – Conjugated vs Isolated Double Bond
Conjugated thiab cais ob daim ntawv cog lus yog ob hom ob daim ntawv cog lus. Qhov sib txawv tseem ceeb ntawm kev sib txuas thiab kev sib cais ob daim ntawv cog lus yog qhov sib txuas ob daim ntawv cog lus txhais tau hais tias cov qauv organic uas muaj kev hloov pauv ob daim ntawv cog lus thiab ib daim ntawv cog lus, qhov kev sib cais ob daim ntawv cog lus txhais tau tias cov qauv organic uas tsis muaj kev hloov pauv ob thiab ib daim ntawv cog lus thiab ob daim ntawv cog lus yog nyob rau hauv ib qho kev npaj random.
