Qhov sib txawv tseem ceeb ntawm cis thiab trans stilbene yog tias hauv cis stilbene, ob pawg phenyl nyob rau tib sab ntawm ob daim ntawv cog lus whereas, hauv trans stilbene, ob pawg phenyl nyob rau sab nraud ntawm ob. daim ntawv cog lus.
Cis thiab trans stilbene yog cov tshuaj tsw qab alkenes uas yog geometrical isomers ntawm ib leeg. Lawv txawv ntawm ib leeg raws li kev taw qhia ntawm ob pawg phenyl uas txuas nrog ob lub pa roj carbon atom ntawm ob daim ntawv cog lus.
Cis Stilbene yog dab tsi?
Cis stilbene yog cov organic compound uas muaj ob pawg phenyl txuas rau ob lub pa roj carbon atom ntawm ob daim ntawv cog lus uas cov pab pawg tau taw qhia tib yam. Cov tshuaj no poob rau hauv qeb ntawm diarylethenes. Lub npe no tau muab vim tias qhov sib xyaw no muaj cis ethane daim ntawv cog lus. Cov tshuaj formula ntawm no organic compound yog C14H12 Nws molar mass yog nyob ib ncig ntawm 180 g / mol. Ntawm chav tsev kub thiab siab, qhov sib xyaw no tshwm sim hauv lub xeev ua kua.
Daim duab 01: Cov qauv ntawm Cis Stilbene
Muaj ob isomers ntawm stilbene: E isomer thiab Z isomer. Ntawm no, cis isomer ntawm stilbene yog hu ua Z-stilbene. Qhov kev sib xyaw no tsis tshua muaj kev ruaj ntseg vim yog qhov siab steric hindrance vim tias ob pawg phenyl loj nyob rau tib sab ntawm ob daim ntawv cog lus. Lub melting point ntawm cis stilbene yog sib piv tsawg heev.
Thaum xav txog cov khoom thiab kev siv ntawm cis stilbene, nws muaj peev xwm ua rau muaj kev cuam tshuam electrocyclic. Raws li cov cuab yeej dav dav, nws tuaj yeem raug photoisomerization nyob rau hauv lub xub ntiag ntawm UV hluav taws xob. Qhov sib xyaw no tshwm sim hauv cov nroj tsuag. Ntxiv mus, qhov sib xyaw no muaj txiaj ntsig zoo hauv kev tsim cov dyes, xws li nplej nruab nrab hauv cov xim lasers, thiab lwm yam.
Trans Stilbene yog dab tsi?
Trans stilbene yog ib qho organic compound uas muaj ob pawg phenyl txuas rau ob lub pa roj carbon atom ntawm ob daim ntawv cog lus uas cov pab pawg tau taw qhia qhov sib txawv. Nws yog isomer ntawm cis stilbene, thiab qhov sib xyaw no tseem muaj npe hu ua E stilbene. Nws muaj ob pawg phenyl uas nyob deb ntawm ib leeg, ua rau qhov sib xyaw no ruaj khov dua li cis isomers vim muaj kev cuam tshuam tsawg dua. Cov tshuaj formula thiab molar pawg ntawm cov compound no zoo ib yam li cov trans stilbene vim lawv yog cov qauv isomers.
Daim duab 02: Tus qauv ntawm Trans Stilbene
Ntawm chav kub thiab siab, trans stilbene muaj nyob rau hauv lub xeev ruaj khov. Nws yog xyaum insoluble nyob rau hauv dej. Cov tshuaj no muaj cov ntsiab lus siab melting piv rau nws cov cis isomer. Cov txheej txheem ntau tshaj plaws ntawm kev tsim cov tshuaj no yog txo cov benzoin nyob rau hauv lub xub ntiag ntawm zinc amalgam. Muaj ntau ntau yam khoom siv ntawm trans stilbene uas yog siv los ua dyes, optical brighteners, phosphors, thiab scintillators.
Qhov txawv ntawm Cis thiab Trans Stilbene yog dab tsi?
Cis thiab trans stilbene yog cov organic tebchaw uas yog isomers ntawm ib leeg. Qhov sib txawv tseem ceeb ntawm cis thiab trans stilbene yog tias nyob rau hauv cis stilbene, ob pawg phenyl nyob rau tib sab ntawm ob daim ntawv cog lus whereas, hauv trans stilbene, ob pawg phenyl nyob rau sab nraud ntawm ob daim ntawv cog lus. Ntxiv mus, cis stilbene tshwm sim nyob rau hauv lub xeev ua kua thaum trans stilbene tshwm sim nyob rau hauv lub solid-state.
Koj tuaj yeem pom ntau qhov sib piv ntsig txog qhov sib txawv ntawm cis thiab trans stilbene hauv cov ntawv hauv qab no.
Summary – Cis vs Trans Stilbene
Cis thiab trans stilbene yog cov organic tebchaw uas yog isomers ntawm ib leeg. Qhov sib txawv tseem ceeb ntawm cis thiab trans stilbene yog nyob rau hauv cis stilbene, ob pawg phenyl nyob rau tib sab ntawm ob daim ntawv cog lus whereas, hauv trans stilbene, ob pawg phenyl nyob rau sab nraud ntawm ob daim ntawv cog lus.
